Diencephalon and Internal Capsule

Question 1

function of the diencephalon

Answer 1

relay station for majority of motor and sensory connections

Question 2

Major relay station for sensory and motor

information from cortex, basal ganglia, cerebellum, limbic system

Answer 2

thalamus

Question 3

Convey information from sensory systems (except olfactory), the basalganglia, and cerebellum
Majority of the thalamic nuclei

Answer 3

relay nuclei

Question 4

Process emotional and some memory information or integrate different types of sensation

Answer 4

association nuclei

Question 5

Regulate consciousness, arousal, and attention

Answer 5

nonspecific nuclei

Question 6

Nuclei of thalamus (except reticular nucleus) project to the

Answer 6

ipsilateral cerebral cortex

Question 7

emotions and memory

Answer 7

VPL
ventral posterolateral
(sensory relay nuclei)

Question 8

Receives taste information from
medulla and vestibular
information from vestibular nuclei

Answer 8

VPM

Question 9

auditory system

“medial music”

Answer 9

medial geniculate

sensory relay nuclei

Question 10

visual system

“lateral light”

Answer 10

lateral geniculate

sensory relay nuclei

Question 11

Involved in control of
instinctive drives, emotionalaspects of behavior and
memory

Answer 11

AN and DL
anterior nucleus and lateral dorsal
- association nuclei

Question 12

controls mood and emotions

Answer 12

medial dorsal

- of association nuclei

Question 13

nonspecific nuclei regulate what

Answer 13

Regulate

consciousness, arousal, and attention

Question 14

Primary blood supply of thalamus is from branches of the

Answer 14

posterior cerebral artery (PCA)

Question 15

lesions to thalamus interrupt

Answer 15

ascending pathways (sensory)

Question 16

Compromises or eliminates (depending on size andseverity of lesion) contralateral sensation

Usually Proprioception is most affected

Answer 16

thalamic impairment

Question 17

hypothalamus

Answer 17

regulates endocrine function

Question 18

maintains homeostasis

Answer 18

hypothalamus

Question 19

lesion in preoptic anterior hypothalamus

Answer 19

central hypothermia- inability to make your body warmer

Question 20

lesion to supraoptic/paraventricular

Answer 20

diabetes insipudus- decreased thirst response

Question 21

lesion to anterior hypothalamus

Answer 21

obesity (medial lesion)

anorexia and emaciation (lateral)

Question 22

function of middle (tuberal) hypothalamus

Answer 22

Blood Pressure, Heart Rate, Satiety regulated here

Question 23

function of posterior hypothalamus

Answer 23

Mammillary Body- Play role in memory

Posterior Nucleus- Thermoregulation

Question 24

blood supply of hypothalamus

Answer 24

ACA and PCA

Question 25

Houses the pineal gland | Includes the choroid plexus – involved in cerebrospinal fluid production

Answer 25

epithalamus

Question 26

associated with seasonal cycles, circadian rhythm

Answer 26

pineal gland

Question 27

Involved in regulating movement – rhythmic movement

Answer 27

subthalamus

Question 28

pretectum

Answer 28

pupillary light reflex

Question 29

Route through which thalamic fibers pass to andfrom the cortex

Answer 29

internal capsule

Question 30

vascular supply of internal capsule

Answer 30

MCA

Question 31

interconnect cortical structureswithin the same cerebral hemisphere

Answer 31

association fibers

Question 32

ex of association fibers

Answer 32

arcuate fasciculus | inferior longitudinal fasciculus

Question 33

fibers that run from onehemisphere to the other hemisphere

Answer 33

commissural fibers

Question 34

ex of commissural fibers

Answer 34

corpus callosum | anterior commissure

Question 35

fibers that pass between the cortex and subcortical structures

Answer 35

projection fibers

Question 36

ex of projection fibers

Answer 36

internal capsule

Question 37

if there is a tumor in optic chiasm, skin is unusually warm and temp keeps changing, what structure is impaired?

Answer 37

hypothalamus

Question 38

structures of the diencephalon

Answer 38

``` Thalamus Hypothalamus Epithalamus – Pineal Gland Subthalamus Pretectum ```