learn anatomy

2.  It is a tent-shaped cavity situated anterior to
the cerebellum and posterior to the pons and
the superior half of the medulla oblongata
 Communicates above with the cerebral
aqueduct and below with the central canal
of the medulla oblongata and spinal cord.

3. Communicates
Above = cerebellar Aqueduct
Below=Central canal of medulla oblogata and spinal cord

4.  Two parts:
 1): superior cerebellar peduncles
 2):inferior cerebellar peduncles

5.  Extends posteriorly toward the cerebellum
 It has two parts :
 1):Superior part = formed by
 > superior cerebellar peduncles
 > superior medullary velum
 2):Inferior part=formed by
 >Inferior medullary velum

6.  It is a double layer of Pia meter
 It give rise to the choroid plexus
 Lies in the interval b/w lower part of roof of fourth
ventricle and the cerebellum
 The cavity of the ventricle extends laterally over
the surface of cerebellar peduncle to form the
lateral recess
 Each lateral recess has a lateral aperture
(Foramen of Luschka)
 The 4rth ventricle communicate with subarachnoid
space by means of single median foramen
ofMegendie & two lateral foramina of Luschka

7.  Posterior surface of the Pons
 The cranial half of the Medulla oblongata