Brainstem

Question 1

brain gives rise to which cranial nerves

Answer 1

olfactory nerve (CN I) and optic nerve (CN II)

Question 2

brainstem receives blood supply from

Answer 2

vertebrobasilar system

Question 3

contents of medulla oblongata anterior surface

Answer 3

• anterior median fissure containing anterior spinal artery
• pyramid olivary nuclei
• roots of CN 12
• decussation occurs here

Question 4

contents of medulla oblongata inferior cerebellar peduncles aka lateral surface contain

Answer 4

roots of CN 9 10 11

Question 5

contents of medulla oblongata posterior surface

Answer 5

• fourth ventricle
• posterior median sulcus containing septum of neuroglia of the spinal cord
• gracile and cunate

Question 6

crus cerebri

Answer 6

basis

Question 7

midbrain is marked by

Answer 7

two superior and two inferior colliculi

Question 8

colliculi concerned with visual reflexes

Answer 8

superior colliculi

Question 9

colliculi concerned with auditory pathway

Answer 9

inferior colliculi

Question 10

division of dorsal pons

Answer 10

median sulcus divides it into medial eminence & facial colliculus

Question 11

overlies abducent nucleus

Answer 11

medial eminence and facial colliculus

Question 12

over lies vestibular nuclei

Answer 12

vesitublar area

Question 13

substantia nigra is apart of

Answer 13

midbrain

Question 14

contain motor tracts in midbrain

Answer 14

cerebral peduncles

Question 15

contains the pigmented red nuclei and the reticular formation

Answer 15

tegmentum

Question 16

contains autonomic respiratory centers

Answer 16

pons

Question 17

autonomic respiratory centers

Answer 17

pneumotaxic apneustic center centers regulate the rate and depth of breathing

Question 18

relay somatic sensory information to the thalamus

Answer 18

nucleus cuneatus and the nucleus gracilis

Question 19

regulates both the heart’s rate and its strength of contraction

Answer 19

cardiac center in medulla oblongata

Question 20

controls blood pressure

Answer 20

vasomotor center in medulla oblongata

Question 21

regulates the respiratory rate

Answer 21

respiratory center in medulla oblongata

Question 22

participates in cyclic activities such as arousing the cortex to consciousness and controlling the sleep-wake cycle

Answer 22

reticular formation