Neuro 3: Pons

Question 1

Ventral part of pons is called….. and Dorsal Part of pons is called

Answer 1

Basilar, tegmental

Question 2

Features of Ventral(basilar) surface of pons

Answer 2

• Basilar groove: groove for basilar Artery
• Transverse pontine (ponto-cerebellar) fibers: they form Middle cerebellar peduncle

Exit of Middle 4 Cranial Nerves (v,vi,vii,viii):
* Trigemnal N(v): from From lateral part of front of pons
* Abducent N(vi): from Ponto-medullary sulcus (between pyramid & pons)
* Facial N (vii) & Vestibulocochlear N (Viii): Cerebello-pontine angle

Question 3

Tegmental surface of pons is seperated from open medulla by

Answer 3

Medullary stria

Question 4

Tegmental surface of pons is bound on each side by

Answer 4

• Superior cerebellar peduncles

Question 5

Tegmental (dorsal) surface of pons along with open medulla together form

Answer 5

floor of 4th ventricle

Question 6

features of Tegmental (dorsal) surface of pons

Answer 6

• Medial Eminence
• Facial colliculus: formed by abducent nuclei & encicling facial Nerve fibers
• Sulcus limitans
• Vestibular Area: lateral to sulcul Limitans