Tela choroidea cerebrum. It has three layers in the roof of the third ventricle.
Tela choroidea cerebrum. C. E. The choroid plexus is located within the cerebral ventricles and is made of choroidal epithelial cells (a type of ependymal cell), loose connective tissue (tela choroidea), and permeable capillaries. methods: The tela-choroidea-to-anterior-cerebral-artery distance (TACAD) was measured in the midsagittal view of the brain on color Doppler, between the anterior border of the tela choroidea and the ACA at the level of the callosal genu. Looking for online definition of Tela chorioidea in the Medical Dictionary? Tela chorioidea explanation free. Pontocerebellar cistern - lateral to the pons. Most of the CSF outflow passes through the medial foramen. The choroid plexus is a structure inside the ventricle(s) that produces cerebrospinal fluid. Prepontine cistern - in front of the pons. Dec 18, 2021 · A triangular fold of pia mater, tela choroidea, covers the roof and it gives rise to the choroid plexus of the third ventricle. Like two longitudinal anteroposterior vascular borders, the choroid plexus of the 3rd ventricle suspends downward from the tela choroidea. The fourth ventricle contains choroid plexus along its roof along the tela choroidea which may protrude out the lateral foramina of Luschka. Apr 29, 2023 · The cerebellomedullary fissure is a space between the cerebellum and the medulla and can be used as a surgical corridor to the IV ventricle. The tela choroidea located in the ceiling of the third and fourth ventricles give rise to the third and fourth choroid plexuses. The choroid plexus is responsible for producing Sep 4, 2020 · Distribution of hydroxycarboxylic acid receptor 1 (HCA 1) in the cerebral ventricular system. Tela choroidea: is a double layer of piamater that forms the lower part of the roof of fourth ventricle. B. Cerebral neurovascular development is a complex and coordinated process driven by the changing spatial and temporal metabolic demands of the developing brain. When the tela choroidea extends into the ventricles, it is enveloped by the ependyma, forming the choroid plexus. Choroid plexus: Lie between the fold of pia mater forming the tela choroidea. Superior wall or roof is related to fornix and corpus callosum. It produces cerebrospinal fluid. Nov 3, 2023 · Tela choroidea is the vascular pia matter which is closely connected to the ependymal lining of the ventricles. The tela choroidea projects form the roof of the 3rd ventricle (=structure found in ventricles) Pick the correct answer The following statements concern the GREAT LONGITUDINAL FISSURE: a) the fissure contains the fold of dura mater, the falx cerebelli Sep 26, 2022 · Introduction The velum interpositum (VI) is a membrane resulting from the superposition of 2 layers of the tela choroidea of the third ventricle demarcating a potential space containing cerebrospinal fluid (CSF) located in the region between the internal cerebral veins (ICV) and the posterior medial choroidal artery (see Images. Apr 6, 2018 · Describe briefly the tela choroidea and the choroid plexus of third ventricle. Tela choroidea refers to a thin region of the roof plate of the original prosencephalic vesicle that gives rise to the choroid plexus of the third ventricle. Brain neoplasia has both primary and secondary effects. The attachment of the plexus to the adjacent brain structures is known as the tela choroidea. The tela choroidea (or tela chorioidea) is a region of meningeal pia mater that adheres to the underlying ependyma, and gives rise to the choroid plexus in each of the brain ’s four ventricles. Jun 2, 2023 · Methods The tela-choroidea-to-anterior-cerebral-artery distance (TACAD) was measured in the midsagittal view of the brain on color Doppler, between the anterior border of the tela choroidea and the ACA at the level of the callosal genu. The caudal point at which the two sides of the tela choroidea come together is called the obex. Familiarity with the process is helpful in understanding neurovascular anatomic variants and congenital arteriovenous shunting lesions encountered in endovascular neuroradiological practice. CP, choroid plexus; FV, fourth ventricle; IMV, inferior medullary velum; LA, lateral aperture; MA, median aperture; SMV, superior medullary velum; TC, tela choroidea. Jun 2, 2023 · Objectives To assess objectively the course of the anterior cerebral artery (ACA) by measuring its distance to the tela choroidea in the midsagittal view, and to compare this distance in normal fetu Tela choroidea of fourth ventricle is a double fold of the pia mater, which is a vascular membrane. a, b Parasagittal (a) and axial (b) planes depict the normal anatomical relationships of the taenia, tela choroidea, choroid plexus (CP), brainstem and A fold of pia mater, the tela choroidea, invaginates into the ventricle through the fissure and covers part of the thalamus. Within each lateral edge of tela choroidea are the plexuses of capillaries called choroid plexus. Opening the tela provides access to the floor and body of the ventricle from the aqueduct to the obex. Sep 4, 2020 · The roof, which makes a gentle upward arch, consist of four layers: one layer of neural tissue (formed by the fornix), two layers of tela choroidea (formed by meningeal pia mater and ependymal cells) interconnected by trabeculae, and one layer of cerebral vasculature in the velum interpositum (the space between the two layers of tela choroidea Roof: Formed by the tela choroidea and fornix Floor: Formed by the hypothalamic structures including the optic chiasm, infundibulum, and mammillary bodies Anterior wall: Formed by the lamina terminalis, anterior commissure, and columns of the fornix Posterior wall: Includes the pineal gland and posterior commissure Communication with Other With further brain development, the expanding cerebral vesicles of the forebrain, covered by its own pia mater, overlap the pia mater of the third ventricle, resulting in the double-layered tela choroidea (velum interpositum) of the roof of the third ventricle. The choroid plexus on the roof of the third ventricle is attached to the inferior membrane of tela choroidea. A fold of pia mater, the tela choroidea, invaginates into the ventricle through the fissure and covers part of the thalamus. The choroid plexus is Aug 15, 2020 · White arrow indicates corpus callosum and pericallosal artery; green arrowhead indicates posterior section of internal cerebral vein along tela choroidea of third ventricle, draining into vein of Galen. Aug 8, 2023 · However, like other parts of the ventricle, it is lined by a membrane consisting of ependyma and a double fold of pia mater which constitutes the tela choroidea of the fourth ventricle. Jan 29, 2021 · The choroid plexus (or plica choroidea) consists of modified ependymal cells surrounding a core of capillaries which arise from the tela choroidea in each of the cerebral ventricles. Nov 3, 2024 · The tela-choroidea of the third ventricle (or velum interpositum) and the quadrigeminal plate cistern forms the median branch of the transverse cerebral fissure (TCF) of Bichat. Jul 23, 2025 · The third ventricle contains a choroid plexus along its roof, along the tela choroidea, continuous with the choroid plexus from the lateral ventricles. (b) With more distraction and disruption both internal cerebral veins (I) can be seen within the tela choroidea (arrow head). Within each lateral edge of the tela choroidea there are plexuses of blood vessels that constitute the choroid plexus (Figs. Jun 28, 2021 · White Matter Of Cerebrum part 2|Association fibers|Projection Fiber|Septum Pellucidum|Tela Choroidea The tela choroidea (or tela chorioidea) is a region of meningeal pia mater that adheres to the underlying ependyma, and gives rise to the choroid plexus in each of the brain ’s four ventricles. Inferiorly: optic chiasma, tuber cinereum & infundibulum, mamillary bodies and posterior perforated substance. This can be seen on the dorsal surface of the medulla and forms the caudal boundary of the 4th ventricle. Meningiomas involve multiple intracranial sites relatively commonly. (c) The thalamus is located in the medial wall of the third ventricle. (b) It is bounded laterally by the internal capsule. Methods The tela-choroidea-to-anterior-cerebral-artery distance (TACAD) was measured in the midsagittal view of the brain on color Doppler, between the anterior border of the tela choroidea and the ACA at the level of the callosal genu. tela choroidea of the lateral ventricle, CEREBRUM pial covering of the Study with Quizlet and memorize flashcards containing terms like 1. The floor descends ventrally and is formed by the optic chiasma, mammillary body, tuber cinereum, infundibulum, posterior perforated substance, and tegmentum of the midbrain [2]. The choroid plexus of the 3rd ventricle hangs downward from the tela choroidea as 2 longitudinal anteroposterior vascular peripheries. [2][3] The choroid plexus consists of modified ependymal cells surrounding a core of capillaries and loose connective tissue. Laterally on each side of the midline, this membrane extends and joins the inferior cerebellar peduncles. Contains the internal cerebral veins. Anatomy The villous structure is made up of multiple capillaries that are scattered by choroid epithelial cells. The lateral recess, whose roof was the tela choroidea extending from the fourth ventricular roof, was a part of the CMF floor. Jul 18, 2025 · Boundaries superiorly: the body of the fornix and hippocampal commissure (psalterium) reaching as far forward as the foramen of Monro inferiorly: the internal cerebral veins and tela choroidea of the third ventricle inferolaterally: the thalamus posteriorly: the narrow base of the triangle abuts the splenium of the corpus callosum 2 Tela choroidea of fourth ventricle is a double fold of the pia mater, which is a vascular membrane. Jul 1, 1999 · The internal cerebral veins course within the tela choroidea on the roof of the third ventricle. Background: Image from Nissl stained coronal section of the mouse brain illustrates the anatomical localization of the brain structures studied. Within the tela choroidea there are two plexuses of blood vessels which bulge downwards into the cavity of third ventricle. Summary: At the location where the wall of the neural tube thins to become the ependymal epithelial lamina (roof of the diencephalon), a connection with the leptomeningeal tela choroidea (pia mater) occurs. The third ventricle communicates with the following: Tela choroidea is a fold of the pia mater that contains a vascularized core. Mar 6, 2024 · cistern of the velum interpositum (unpaired): between the layers of tela choroidea in the roof of the third ventricle pericallosal cistern (unpaired): superior to the cistern of the lamina terminalis and the corpus callosum, stretching from the splenium to the genu The choroid plexus in the body of the lateral ventricle originates from the tela choroidea of the roof of the third ventricle and is apparently attached to the fornix by the taenia fornicis and to the thalamus by the taenia choroidea. The tela choroidea of the third ventricle is formed along a ridge between the splenium and the ventricular roof named the transverse fissure. The tela choroidea in the roof of the third ventricle is triangular, and the choroid plexus hangs downwards from it as two longitudinal anteroposterior vascular fringes. The nuclei of the abducens (cranial nerve [CN] VI) and facial (CN VII) nerves are located anterolateral to the floor of the fourth ventricle at the level of the pons. These are the choroid plexuses of the third ventricle. Tela choroidea of the third ventricle, the FALSE answer is: A. It is located between the lower front part of the cerebellum and the back part of the medulla and fourth ventricle. It is situated below the fornix. Normally the velum interpositum is a slit-like structure located under the fornix and over the III ventricle and thalami. The In the third ventricle, the tela choroidea is, in fact, embedded in the multilayered roof of the ventricle. Cerebral Aqueduct Jul 28, 2021 · The tela choroidea is a somewhat transparent two-layered framework obtained from the pia mater, and its capabilities will be discussed further in the article. The tela choroidea is common to the two lateral ventricles, and to the third ventricle. It is a triangular shaped double layer of pia mater which is present in the interval between the splenium of corpus callosum and fornix above and the two thalami below. &nbs The choroid plexus, or plica choroidea, is a plexus of cells that arises from the tela choroidea in each of the ventricles of the brain. a) the posterior wall is formed by the opening into the cerebral aqueduct and the pineal recess. The lateral ventricles are located within the cerebrum and connect to the third ventricle. Describe the tela choroidea and choroid plexus of fourth ventricle. Above the roof is the body of the fornix. Superiorly: tela choroidea of the third ventricle, body of the fornix and lateral ventricle. Highly vascularized tela choroidea of the medial surface of the cerebrum evaginates and acquires an epithelium to form the choroid plexus. The taenia is actually the ependyma that covers the internal wall of the ventricular cavity and the choroid plexus. The final layer contains the internal cerebral veins and the medial posterior choroidal arteries. 11,12 Aug 24, 2023 · The regions of the ventricles that contain evaginations of the pia mater are known as tela choroidea. It consists of thin, semi-opaque membranes. This membrane stretches lateral to the middle line area and connects to the inferior cerebellar peduncles. Sep 30, 2024 · The roof of the fourth ventricle is a delicate structure composed of ependymal cells and pia mater, forming what’s known as the tela choroidea. 1) The developing neural tube includes the forebrain (FB) which is surrounded by the pia mater (broken line). Diagram demonstrating the formation of the double-layered tela choroidea (velum interpositum) of the third ventricle in the human. Jul 8, 2024 · At certain points the tela choroidea bulges into the ventricle and is closely associated with numerous villous processes and an underlying vascular bundle. History and etymology "Pia mater" derives from medieval Latin for "soft mother". The internal cerebral vein runs between its layers. The cerebral aqueduct contains no choroid plexus. The following statements concern the diencephalon: (a) It extends anteriorly as far as the optic chiasma. It is formed by the joining of the pia mater and ependyma and provides attachment to the choroid plexus. [1][2] Tela is Latin for woven and is used to describe a web-like membrane or layer. 2) and 3) The expanding vesicle of the cerebral hemisphere (HV) carries its own pia mater (b) which overlaps the pia mater (a) of the third ventricle Methods The tela-choroidea-to-anterior-cerebral-artery distance (TACAD) was measured in the midsagittal view of the brain on color Doppler, between the anterior border of the tela choroidea and the ACA at the level of the callosal genu. (d) Lying in the floor of the ventricle, from posterior to anterior, are the optic chiasma, the tuber cinereum, and the mammillary bodies. Jul 22, 2017 · Two lateral dorsal recesses: on either side of the nodule. The ventricular system consists of a series of interconnected cavities within the brain. On each side vessels of the choroid plexus project into the ventricle. The third ventricle can suprapineal recess tela choroidea, with dilation of the velum interpositum above it (including the internal cerebral veins) fornix massa intermedia (between the thalami) interventricular foramen (of Monro) anterior commissure lamina terminalis The coronal view also shows many of these structures: infundibular recess (coronal) supraoptic recess Above the ependyma, is the pia mater (both will be adhered) and they together are known as tela choroidea. Gently displacing the tonsils laterally exposes both the tela choroidea and the inferior medullary velum. On each side, the tela forms a horizontal and vertical limb. (d) The epithalamus is formed by the cranial end of the substantia nigra and the red nuclei. Please login, subscribe, or check for institutional access to view this information. The choroid plexus produces and secrete the cerebrospinal fluid. What is Tela chorioidea? Meaning of Tela chorioidea medical term. In summary: The velum interpositum is the double-layered tela choroidea of the third ventricle. As this happens, the tela choroidea becomes tightly surrounded by the cuboidal ependymal lining of the third ventricle, giving rise to the choroid plexus. The third ventricle is a midline cavity located between the two thalami and hypothalami. The widest part of the fourth ventricle is visible at the pontomedullary junction. The tela choroidea gives rise to the choroid plexus. These structures play a crucial role in the production and circulation of cerebrospinal fluid within the ventricular system. A tuft of vascular pia mater (tela choroidea) invaginates from the roof to form choroid plexus, which hangs within the cavity of the third ventricle and is responsible for production of cerebrospinal fluid. Reference ranges in relation to gestational age were established in a prospective, cross-sectional study of 253 normal healthy fetuses between 19 and 36 weeks Sep 1, 2004 · Most tumors are located over the cerebral convexities. It produces cerebrospinal fluid. Each ventricle has a distinct shape and walls formed by surrounding structures. In the third ventricle, the tela choroidea extends from the roof, forming choroid plexuses that hang into the cavity of third ventricle on either side of the midline. What does Tela chorioidea mean? Sep 26, 2022 · The velum interpositum (VI) is a membrane resulting from the superposition of 2 layers of the tela choroidea of the third ventricle demarcating a potential space containing cerebrospinal fluid (CSF) located in the region between the internal cerebral veins (ICV) and the posterior medial choroidal artery (see Images. There is a common tela choroidea for third and lateral ventricle. The arterial supply to the vascular core of the tela choroidea of third ventricle (as well as the lateral ventricle) is provided by the anterior and posterior choroidal branches of the internal carotid and posterior cerebral arteries. Jul 1, 2021 · 8:02 Lateral and Posterior Dissection Here the posterior pole is dissected from below the more posterior part of the tela choroidea. Insets: confocal micrographs from coronal sections of the mRFP-HCA 1 reporter mouse brain demonstrate strong labeling in (a) the CP; (b) tela choroidea; (c The tela choroidea of the third ventricle is seen at the junction between the columns and the body of the fornix (arrow head). Abstract Objectives: To assess objectively the course of the anterior cerebral artery (ACA) by measuring its distance to the tela choroidea in the midsagittal view, and to compare this distance in normal fetuses with that in those with agenesis of the corpus callosum (ACC), a condition known to be associated with an abnormal course of the ACA. (e The choroid plexus of third ventricle is formed when a structure called the tela choroidea intrudes into its cavity of the third ventricle from above. [3] Dec 27, 2021 · Found in the roof of the third ventricle, the tela choroidea is supplied by the medial posterior choroidal arteries and, when present, by a superior posterior choroidal artery 2,6. The tela choroidea infringes into the cavity of fourth ventricle forming the choroid plexus, which is surrounded by the ependyma. It lies in apposition with the ependymal lining of the ventricles. The third ventricle communicates with the following: Aug 10, 2025 · The choroid plexus is located within the cerebral ventricles and is made of choroidal epithelial cells (a type of ependymal cell), loose connective tissue (tela choroidea), and permeable capillaries. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2023 Google LLC Jul 23, 2025 · The third ventricle contains a choroid plexus along its roof, along the tela choroidea, continuous with the choroid plexus from the lateral ventricles. In the fourth ventricle, the tela choroidea surfaces from the caudal part of the roof of the ventricle bilaterally. The third ventricle connects to the fourth ventricle via the cerebral aqueduct. 7). This epithelial layer, with hair like projections, is composed of choroid epitheliocytes. Apr 17, 2025 · The tela choroidea forms two of the three layers located below the fornices. The deepest component of the choroid plexus is a layer of simple cuboidal epithelial cells, collectively known as the choroid epithelium. It is derived from the pia mater. This thin membrane houses the choroid plexus, a network of blood vessels responsible for producing cerebrospinal fluid. Herein, the processes of vasculogenesis and The roof, which makes a gentle upward arch, consist of four layers: one layer of neural tissue (formed by the fornix), two layers of tela choroidea (formed by meningeal pia mater and ependymal cells) interconnected by trabeculae, and one layer of cerebral vasculature in the velum interpositum (the space between the two layers of tela choroidea About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2024 Google LLC Medial Posterior Choroidal Artery Pineal Gland Posterior Caudate Vein Posterior Commissure Posterior Septal Vein Superior Choroidal Vein Tela Choroidea Thalamostriate Vein Subscribe to Access This content is only available to subscribers of the Neurosurgical Atlas. These three layers of choroid plexus Apr 4, 2018 · Choroid plexus: The lateral parts of a triagular fold of pia mater (tela choroidea – is common for the two lateral and third ventricles) invaginate into the ateral ventricles through the choroid fissures. Jan 1, 2012 · The CSF travels from the lateral ventricles through the foramina of Monro into the third ventricle, through the narrow cerebral aqueduct into the fourth ventricle, through the paired apertures of Luschka and the median aperture of Magendie within the tela choroidea in the roof of the fourth ventricle into the cisterna magna, and then slowly Nov 8, 2023 · 5. It has three layers in the roof of the third ventricle. 6-4 A and 6-8). As it does so, it becomes tightly surrounded by the cuboidal ependymal lining of the ventricle, giving rise to the choroid plexus. Dec 27, 2021 · The tela choroidea lies along the choroidal fissure in the medial wall of the lateral ventricles where it is vascularized by one anterior choroidal artery (coming off of the internal carotid artery) and several choroidal branches of the posterior cerebral artery (the medial and lateral posterior choroidal arteries) 1,6. [3 Jan 2, 2023 · Tela choroidea and its choroid plexus form parts of the fourth ventricular roof (dorsal aspect). 2, 20. The choroid plexus, containing cuboidal ependymal cells, produces cerebrospinal fluid in the brain. Jul 28, 2021 · The tela choroidea of the fourth ventricle, like the rest of the fourth ventricle, is bordered with a membrane composed of the ependyma and a double fold of the pia mater. Furthermore, the locational relationship between the cyst and the internal cerebral veins suggests that the cyst originated from the upper layer of the tela choroidea [ Figure 5b ]. D. The choroid plexus extends from the interventricular foramen, where it joins with the plexuses of the third ventricle and opposite lateral ventricle, to the end of the inferior horn. In reptiles and primates, the expanding cerebrum overlaps the diencephalon, resulting in the double-layered tela choroidea of the third ventricle. A vascular layer exists between both the layers of the tela choroidea, consisting primarily of medial posterior choroidal arteries and their divisions. Posteriorly: posterior commissure, pineal gland and habenular trigone. Thus, anatomically, they are inferior or lateral to the CVI CSF space. This is the choroid plexus and involved in the production of CSF 1. It is formed when the tela choroidea, which is a double fold of pia with a vascular core, infringes into the ventricular cavity. Cerebrospinal fluid circulates through the ventricles The fourth layer is the inferior membrane of tela choroidea, which attaches to the lateral side of the thalamus, along a thin bundle of fibers, the stria medullaris thalami. The tela choroidea and the choroid The attachment of the plexus to the adjacent brain structures is known as the tela choroidea. (c) There is display of the columns (C) extending posteriorly to separate the body of the fornix. This engenders the choroid plexus of the III rd ventricle that invades the ventricle lumen and forms cerebrospinal fluid. (c) The vascular tela choroidea projects from the floor to form the choroid plexus. The gap between the obex, the vermis, and the tela choroidea, in which the choroid plexus arises is the median aperture. Caudal fossa involvement is unusual. Dec 27, 2021 · The tela choroidea lies along the choroidal fissure in the medial wall of the lateral ventricles where it is vascularised by one anterior choroidal artery (coming off of the internal carotid artery) and several choroidal branches of the posterior cerebral artery (the medial and lateral posterior choroidal arteries) 1,6. Aug 12, 2025 · The sidewalls are formed by the vela and cerebellar peduncles. Sagittal Schematic View, Cavum Veli Interpositi and Coronal Schematic View Illustrations of the normal posterior fossa. Jul 1, 1999 · FIG. . The commonly accepted role of the choroid plexus in the formation of a major portion of cerebrospinal fluid (CSF) may be only one of a number of functions of this CVO (Davson, 1967; McComb, 1983). The tela choroidea and the choroid plexus are present in the lateral, third, and fourth ventricles of the brain. In the third ventricle, the tela choroidea is, in fact, embedded in the multi-layered roof of the ventricle. The choroid pl Jun 13, 2015 · The caudal wall is formed by the posterior commissure and the recesses related to the pineal, whereas the roof is the tela choroidea, from which the choroid plexus is suspended (Figs. This is the relationship with the right internal cerebral vein, and the last remnant of tela choroidea are opened with scissors in order to expose the posterior pole of the tumor. The third ventricle's roof is formed by the fornix and tela choroidea, while its floor extends from the optic chiasm to the posterior perforated substance. Mar 1, 2000 · The entire roof of the diencephalon (third ventricle) is visible, and consists of a single layer of pia mater covered by a prominent venous plexus. Sagittal Schematic View, Cavum Veli Interpositi and Coronal tela choroidea of the fourth ventricle [tela choroidea ventriculi quarti, NA], MEDULlA pial covering overlying the posterior medullary velum, or both layers, which together constitute a thin membranous roof over the caudal part of the fourth ventricle. It is widest at the level of the pontomedullary junction. Jun 2, 2023 · Objectives To assess objectively the course of the anterior cerebral artery (ACA) by measuring its distance to the tela choroidea in the midsagittal view, and to compare this distance in normal fetu The tela choroidea inside the top of the 3rd ventricle is triangle shaped. [1] Regions of the choroid plexus produce and secrete most of the cerebrospinal fluid (CSF) of the central nervous system. The inferior medullary velum and tela choroidea extended laterally from the middle portion of the rhomboid ventricular roof to form the roof of the lateral recess. Intracranial tumors other than meningiomas occur rarely in cats. The tela choroidea of the fourth ventricle, which is supplied by branches of the posterior inferior cerebellar arteries, is located in the posterior medullary velum. The tela choroidea in the roof of the 3rd ventricle is triangular in shape. Others arise from the tela choroidea and are in the third ventricle. The obex is the most caudal tip of the fourth ventricle. This structure hangs into the cavity on both sides of the midline. Tela Choroidea of the third and lateral ventricles The tela choroidea is a double layered fold of pia mater that occupies the interval between the splenium of the corpus callosum and fornix, above, and the two thalami below. Medially: the 3rd ventricle. It communicates with the lateral ventricles via the foramen of Monroe and with the fourth ventricle via the cerebral aqueduct. 20. Actually lies between the tela choroidea that lines the inferior surface of the fornix and splenium of the corpus callosum and the superior surface of the third ventricle and thalamus. sywi 0x buuy1 sol vcpg 5mzuuc7f 2mdrzr0 sh53pb glo2ii deai3prs