Brain Stem (54-59)

Question 1

Brain stem control (3) ?

Answer 1

Consciousness
Respiration
Cardiovascular

Question 2

Mid brain is divided by ———— into ——-&———-?

Answer 2

Cerebral aqueduct of Sylvius
- tectum
- cerebral peduncles

Question 3

Cerebral peduncles consist of (3) ?

Answer 3

• crus cerebri
• substantianigra
  Tegmentum

Question 4

Anterior surface of mid rain is formed ———————— & ———-CN ?

Answer 4

2 cerebral peduncles with indrpedunclar fossa

Oculomotor CN

Question 5

Posterior surface of mid brain formed of ———————————-
& ————CN ?

Answer 5

2 superior colliculi connect to lateral geniculate by superior brachium
2 inferior colliculi connect to medial geniculate by inferior brachium

Trochlear CN

Question 6

Interpeduncular fossa site ?

Answer 6

In front of midbrain

Question 7

Interpeduncular fossa boundaries ?
1-Anterior :
2-Anterolateral :
3-Posterior:
4-Posterolateral :

Answer 7

1- optic chiasma
2-optic tract
3- pons
4- crura cerebri

Question 8

Interpeduncular fossa content (4) ?

Answer 8

• tuber cinereum
• mammillary bodies
• posterior perforated substance
• oculomotor nerve

Question 9

Interpeduncular fossa surrounded by —————- within————of CSF ?

Answer 9

Circulus of Willis. , Interpeduncular cistern

Question 10

Blood supply of mid Brian ?

Answer 10

• posterior cerebral
• posterior communicating
• anterior choroidal

Question 11

Anterior surface of pons ? (4)

Answer 11

• median basilar groove
• transverse pontine fibers
• middle cerebellar peduncle
• Trigeminal nerve

Question 12

Posterior surface of pons forms ?

Answer 12

4th ventricle

Question 13

Posterior surface of pons separated from medulla by ———?

Answer 13

Medullary stria

Question 14

Posterior surface of pons show ? (5)

Answer 14

• posterior median sulcus & medial eminence
• facial colliculus
• superior fovea
• locus coeruleus
• Upper vestibular area

Question 15

Pons blood supply ?

Answer 15

Basilar artery

Question 16

Facial colliculus its caused by winding of ———nerve fibers around —————— nucleus ?

Answer 16

Facial fibers around abducent nucleus

Question 17

—————— lateral to facial colliculus ?

Answer 17

Superior fovea

Question 18

—————- main site for norepinephrine for arousal & attention ?

Answer 18

Locus coeruleus

Question 19

Upper open medulla forms ———————?

Answer 19

Floor of 4th ventricle

Question 20

Lower open medulla forms ———————?

Answer 20

Central canal

Question 21

Anterior lateral surfaces of medulla oblongata ?

Answer 21

• anterior median fissure
• pyramid
• olive
• Inferior cerebellar peduncles

Question 22

Anterolateral sulcus of medulla is between ———& ———- gives attachment to ————-CN ?

Answer 22

Between pyramid & olive

Hypoglossal nerve

Question 23

Posterolateral sulcus is between ———&———- gives attachment to ——————————(3) CN ?

Answer 23

Between olive & inferior cerebellar peduncle
- glossopharyngeal n
- vagus n
- accessory n

Question 24

Posterior surface of medulla upper ( back of open medulla ) shows ?

Answer 24

• posterior medial sulcus
• inferior fovea
  (3 triangles )
  1- hypoglossal triangle
  2- Vagal triangle
  3- lower vestibular area

Question 25

Lower part of posterior medulla ( back of closed medulla ) shoes ?

Answer 25

• posterior median sulcus
  1) gracile & cuneate

Question 26

Blood supply to medulla ? Anterior

Answer 26

Vertebral & anterior spinal artery

Question 27

Blood supply to medulla ? Posterior

Answer 27

Posterior inferior cerebellar artery PICA.