Section 2, Part 3 -fall apart, horizontal section structures

Question 1

What lobe does the inferior horn of the lateral ventricle lie in?

Answer 1

temporal lobe

Question 2

What structure forms a roll of cortex that extends the length of the inferior horn of the lateral ventricle?

Answer 2

hippocampus

Question 3

What is the hippocampus involved in?

Answer 3

memory for spatial relationships

Question 4

Where do the axons of the hippocampus connect to?

Answer 4

the mammillary bodies of the hypothalmus

Question 5

What is the caudate nucleus involved in?

Answer 5

motor and cognitive functions (voluntary movement)

Question 6

What is the thalamus and what is it involved in?

Answer 6

collection of nuclei

relays sensory and motor info to specific regions in the cortex

Question 7

What structure does this describe: pilliow shape at the posterior end of thalamus?

Answer 7

pulvinar

Question 8

What two important nuclei are found on the ventral surface of the thalamus?

Answer 8

medial and lateral geniculate nuclei

Question 9

What is the function of the medial geniculate nucleus?

Answer 9

relays auditory info to heschl’s gyri

Question 10

What is the function of the lateral geniculate nucleus?

Answer 10

receives info from eye via optic tract

projects to visual cortex

Question 11

What does the brachium of the inferior colliculus connect?

Answer 11

inferior colliculus and the medial geniculate nucleus

Question 12

What is the function of the amygdala?

Answer 12

communicates visceral info:
hunger, thirst, anger, fear, sexual feelings

btwn:
brainstem, hypothalamus, cortex

Question 13

What structures does the lenticular nucleus include?

Answer 13

globus pallidus and putamen

Question 14

What structures form the striatum?

Answer 14

putamen and the caudate

Question 15

What is the internal capsule?

Answer 15

neck of funnel of axons of the corona radiata
carries info from:
thalamus to cortex
cortex to thalamus
cortex to basal ganglia
cortex to brainstem and spinal cord

Question 16

What structures are a part of the basal ganglia?

Answer 16

putamen, caudate, globus pallidus

Question 17

What would result from bilateral damage to the amygdala?

Answer 17

blunting of emotions and sexual behavior

Question 18

What is the function of the anterior limb of the internal capsule and what would result if it was damaged?

Answer 18

carries info to and from frontal limbs

damaged - symptomatically silent

Question 19

What axons pass through the posterior limb of the internal capsule?

Answer 19

carries somatic sensory and motor from each side of the central sulcus

1. visual radiations from LGN to occipital lobes
2. auditory radiations from MGN to superior temporal gyrus
3. cortex –> brainstem
   - coritcobulbar, corticopontine
4. cortex –> spinal cord
   - corticospinal

Question 20

After the caudate and putamen send projections to the globus pallidus, where do these projections continue onto?

Answer 20

thalamus then to motor areas of the cortex

Question 21

What does the posterior limb of the internal capsule become? What information passes through here?

Answer 21

crus cerebri

-motor functions from cortex to brainstem and spinal cord

Question 22

What is the ventral portion of the basal ganglia involved in?

Answer 22

receives info from amygdala and is involved in emotional - limbic

NOT motor control anymore