lab 2

Question 1

CN 1

Answer 1

Olfactory, bulb and tract

Question 2

CN 2

Answer 2

the optic nerves consist of axons from neurons located in the retina
optic tracts

Question 3

CN3

Answer 3

oculomotor located in the midline, just superior to pons and emerge from the interpeduncular fossa between the posterior cerebral and superior cerebellar arteries

Question 4

CN 4

Answer 4

trochlear, only CN to emerge from dorsum of brain stem, below inferior colliculus

Question 5

CN 5

Answer 5

trigeminal emerge from lateral pons

Question 6

CN 6

Answer 6

abducent, located near the midline they emerge at the junction of pons with medulla

Question 7

CN 7

Answer 7

Facial, located at the base of pons lateral to 6

Question 8

CN 8

Answer 8

Vestibulocochlear, located at the base of the pons immediatley stuck to the lateral to CN 7

Question 9

CN 9

Answer 9

Glossopharyngeal, emerge from the olive

Question 10

CN 10

Answer 10

Vagus, stuck to 9

Question 11

CN 11

Answer 11

accessory, runs along the sides of medulla

Question 12

CN 12

Answer 12

hypoglossal, several rootlets that emerge from midline

Question 13

Medial geniculate nucleus

Answer 13

one of the thalamic nuclei located at the posterior pole of the thalamus, located in the region of the superior collicili

Function: a relay in auditory path

Question 14

Lateral geniculate nucleus

Answer 14

one of the thalamic nuclei located at the posterior pole of the thalamus, located in the region of the superior collicili

function: a relay for visual

Question 15

Cerebral peduncles

Answer 15

consists of tegmentum the dorsal and crus cerebi

it is separated by the substantia nigra

Question 16

red nucleus

Answer 16

in midbrain tegmentum, dark bc of vascularity, relays between cerebral and cerebellar cortices and the spinal cord