Diencephalon

Question 1

Diencephalon consists of complex masses of grey matter around the cavity of ____

Answer 1

Third Ventricle

Question 2

What is the anterior nucleus incorporated in?

Answer 2

The papez circuit

Question 3

Which group acts as the integrating center for somatic and visual impulses?

Answer 3

Medial group

Question 4

The medial group connects with the prefrontal cortex to help with what?

Answer 4

Mood of feeling tone to the emotional aspect of behavior

Question 5

Which group conveys information to motor areas on the cerebrum from the basal ganglia and cerebellum?

Answer 5

VA and VL

Question 6

Surgical ablation of VL and VA may abolish tremor and rigidity in what disease?

Answer 6

Parkinson’s disease

Question 7

Thiamine deficiency in alcoholics results in what?

Answer 7

Degeneration of Medial group of nucleus, mammillary bodies, hippocampus and vermis of cerebellum

Question 8

Thalamic pain syndrome affects which group?

Answer 8

The ventral nuclear group

Question 9

How do the patients present with thalamic pain syndrome?

Answer 9

Burning, aching pain in contralateral half of the body

Question 10

Damage to the medial lemniscus of VPL does what?

Answer 10

Increases the sensitivity to pain and contralateral loss of vibratory sensation from the contralateral body

Question 11

Thalamic pain syndrome is resistant/responsive to pain medications?

Answer 11

Resistant

Question 12

What is the medial (dorsalmedial) nucleus responsible for?

Answer 12

Integration of somatic, visceral and olfactory information and memory?

Question 13

What is the pulvinar group responsible for?

Answer 13

Helps integrates somesthetic, visual, and auditory input

Question 14

What is the VA and VL group responsible for?

Answer 14

Gets information from basal ganglia and cerebellum, red nucleus, and relays to the frontal lobe

Question 15

What is the VPM group responsible for?

Answer 15

Trigeminothalamic and soltarothalamic

Question 16

What is the VPL group responsible for?

Answer 16

Medial leminiscus and spinal leminiscus; Anterolateral Spinothalamic Tract, Dorsal Column

Question 17

What is the MGB responsible for?

Answer 17

Auditory

Question 18

What is the LGB responsible for?

Answer 18

Vision

Question 19

What is the intralaminar responsible for?

Answer 19

Arousal, receives reticular fibers from brainstem and other thalamic nuclei

Question 20

What acts as the relay station of all sensory pathways?

Answer 20

Thalamus

Question 21

What senses does the thalamus NOT relay?

Answer 21

Olfactory

Question 22

The thalamus is concerned with conscious interpretation of crude sensations like ___

Answer 22

Pain and Temperature

Question 23

What pathways does the thalamus regulate?

Answer 23

The activities of motor pathways

Question 24

The thalamus plays an important role in the control of ___

Answer 24

Emotional behavior and recent memory mechanisms

Question 25

The thalamus is associated with autonomic control of ___

Answer 25

Viscera

Question 26

Is the thalamus concerned with the personality and intellect of an individual?

Answer 26

Yes

Question 27

What is the preoptic nucleus responsible for?

Answer 27

Sex hormones

Question 28

Which nucleus controls the sex hormones?

Answer 28

Preoptic Nucleus

Question 29

What is the paraventricular and supraoptic nuclei responsible for?

Answer 29

ADH and Oxytocin

Question 30

Which nucleus controls ADH and Oxytocin?

Answer 30

Paraventricular and Supraoptic nuclei

Question 31

What is the suprachiasmatic nucleus responsible for?

Answer 31

Circadian rhythms

Question 32

Which nucleus controls circadian rhythms?

Answer 32

Surpachiasmatic Nuclei

Question 33

What is the arcuate nucleus responsible for?

Answer 33

Releasing and inhibitory factors

Question 34

Which nucleus is responsible for releasing and inhibitory factors?

Answer 34

Arcuate nucleus

Question 35

What is the ventromedial nucleus responsible for?

Answer 35

Satiety

Question 36

Which nucleus is responsible for satiety?

Answer 36

Ventromedial nucleus

Question 37

What is the dorsomedial nucleus responsible for?

Answer 37

Controls behavior

Question 38

Which nucleus controls behavior?

Answer 38

Dorsomedial nucleus

Question 39

What are the mammillary bodies responsible for?

Answer 39

Limbic system

Question 40

Which nucleus controls the limbic system?

Answer 40

Mammillary bodies

Question 41

What is the anterior hypothalamic zone responsible for?

Answer 41

Senses elevation of body temperature It is responsible for cooling the body down and activates those processes that favor heat loss, including vasodilatation of cutaneous blood vessels, sweating (evaporation of water for cooling), and panting.

Question 42

Which nucleus senses elevation of body temperature?

Answer 42

Anterior Hypothalamic Zone

Question 43

What is the posterior hypothalamic zone responsible for?

Answer 43

Senses decrease of body temperature It is responsible for heating the body and triggers activities concerned with heat production and heat conservation. These include the metabolic heat-producing systems (thermogenesis by the oxidation of glucose), vasoconstriction (especially of cutaneous blood vessels), erection of hair (goose pimples), and shivering.

Question 44

Which nucleus senses decrease of body temperature?

Answer 44

Posterior Hypothalamic Zone

Question 45

What is the lateral hypothalamic zone responsible for?

Answer 45

Hunger; feeding center

Question 46

Which nucleus is responsible for hunger?

Answer 46

Lateral Hypothalamic Zone

Question 47

What can destruction of the "heat-dissipating region" do to the body?

Answer 47

Cause hyperthermia

Question 48

What can the malfunctioning for the heating center produce?

Answer 48

A cold-blooded mammal that cannot sustain a uniform body temperature.