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    Brain Ventricles: (Rabbia Yousaf) Pharm-D Rashid Latif College of Pharmacy

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    Shafaqat Ghani Shafaqat Ghani
    The document describes the four ventricles in the brain. There are two lateral ventricles located in the cerebral hemispheres, the third ventricle located in the diencephalon, and the fourth ventricle located between the pons, medulla, and cerebellum. The ventricles are filled with cerebrospinal fluid and connected by the cerebral aqueduct. Each ventricle has a distinct shape and borders formed by brain structures.

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    Brain Ventricles: (Rabbia Yousaf) Pharm-D Rashid Latif College of Pharmacy

    Uploaded by

    Shafaqat Ghani Shafaqat Ghani
    17 views29 pages
    The document describes the four ventricles in the brain. There are two lateral ventricles located in the cerebral hemispheres, the third ventricle located in the diencephalon, and the fourth ventricle located between the pons, medulla, and cerebellum. The ventricles are filled with cerebrospinal fluid and connected by the cerebral aqueduct. Each ventricle has a distinct shape and borders formed by brain structures.

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    Original Title

    BRAIN VENTRICLES

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    The document describes the four ventricles in the brain. There are two lateral ventricles located in the cerebral hemispheres, the third ventricle located in the diencephalon, and the fourth ventricle located between the pons, medulla, and cerebellum. The ventricles are filled with cerebrospinal fluid and connected by the cerebral aqueduct. Each ventricle has a distinct shape and borders formed by brain structures.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    17 views29 pages

    Brain Ventricles: (Rabbia Yousaf) Pharm-D Rashid Latif College of Pharmacy

    Uploaded by

    Shafaqat Ghani Shafaqat Ghani
    The document describes the four ventricles in the brain. There are two lateral ventricles located in the cerebral hemispheres, the third ventricle located in the diencephalon, and the fourth ventricle located between the pons, medulla, and cerebellum. The ventricles are filled with cerebrospinal fluid and connected by the cerebral aqueduct. Each ventricle has a distinct shape and borders formed by brain structures.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 29

    BRAIN VENTRICLES

    (Rabbia Yousaf)
    Pharm-D
    Rashid Latif College Of Pharmacy
    The brain is bathed by the cerebrospinal fluid (CSF)
    Inside the brain, there are spaces (ventricles) filled
    with CSF
    There are 4 ventricles
     2 lateral ventricles are in the brain hemispheres
     3rd ventricle is in the diencephalon
     4th ventricle is between the pons, open medulla
    and the cerebellum
     The 3rd & the 4th ventricles are connected by the
    cerebral aqueduct
    Lateral Ventricle
    Definition :
    It is the cavity of the cerebral hemisphere.
    It is C-shaped.
    It has 3 horns & central part.
    Anterior Horn: in the frontal lobe.
    Posterior horn: in the occipital lobe
    Inferior horn: in temporal lobe.
    Central part or body: in the parietal lobe.
    Superior view of the ventricular system.
    Anterior Horn
    In the frontal lobe.
    Roof:
    Corpus callosum (trunk)
    Floor:
     Corpus callosum (Rostrum)
    Anterior:
     Corpus callosum (Genu)
    Medially:
    Septum pellucidum.
    Laterally:
     Head of Caudate nucleus.
    Body or Central part
    Lies in the parietal lobe.
    Roof:
     Corpus callosum (Trunk).
    Floor:
     From lateral to medial it is formed by:
     Body of caudate nucleus,
     Upper surface of thalamus
    Choroid plexus,
    Body of fornix.
    Medial wall:
    Septum pellucidum.
    Lateral wall:
    narrow area at the meeting of roof & floor.
    Posterior Horn
    In the occipital lobe.
    Roof, lateral wall, and floor:
     Are formed by the Tapetum of the corpus
    callosum.
    Medially:
     There are 2 elevations:
    Bulb of posterior horn
    Calcar avis
    Inferior Horn
    It lies in the temporal lobe.
    Roof:
     Tapetum,
     Tail of caudate nucleus,
     Amygdaloid nucleus
    Stria terminalis.
    Floor:
     Hippocampus,
    Fimbria of hippocampus & Collateral eminence.
    Lateral wall:
    Tapetum of the corpus callosum.
    Third Ventricle

    Third ventricle is a narrow slit-like cavity whose


    lateral walls are formed by the thalamus and
    hypothalamus on either side. At the rostral margin
    of the midbrain, the cerebral aqueduct opens into
    the third ventricle.
    The roof of the ventricle is formed by pia-
    ependyma, which spans between the two striae
    medullaris thalami, situated along the dorsomedial
    border of the thalamus.
    In the rostral part of the third ventricle lies an
    aperture, the interventricular foramen or
    foramen of Monro, which is located between the
    column of the fornix and the anterior pole of the
    thalamus.
    The lateral walls of the 3rd ventricle is formed of
    the thalamus and hypothalamus.
    Caudally, the third ventricle becomes continuous
    with the cerebral aqueduct.
    The interventricular foramen provides
    communication, on either side, with the extensive
    lateral ventricle located within the cerebral
    hemisphere.
    Fourth Ventricle

    A tent shaped cavity filled with cerebrospinal


    fluid.
    Lined with ependyma.
    Continuous above with the cerebral aqueduct of
    the midbrain and below with the central canal of
    the medulla oblongata and the spinal cord.
    Lateral Boundaries

    The caudal part ……the inferior cerebellar


    peduncle
    The cranial part…….the superior cerebellar
    peduncle
    Roof or Posterior wall
    The tent-shaped roof projects into the cerebellum.
    The superior part…….medial borders of the two
    superior cerebellar peduncles and connecting sheet
    of white matter called the superior medullary
    velum.
    The inferior part…….the inferior medullary
    velum, which consists of a thin sheet devoid of
    nervous tissue and formed by the ventricular
    ependyma and its posterior covering of pia mater.
    Choroid Plexus of the Fourth Ventricle is
    formed the posterior inferior cerebellar
    arteries
    The choroid plexus has a T shape.
    The ventricle part of the T is double.
    Is formed from the highly vascular tela choroidea.
    The tela choroidea is two layered fold of pia mater
    that projects through the roof of the ventricle and
    is covered by ependyma.

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