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1

What are the major components of the diencephalon?

Epithalamus
Thalamus
Hypothalamus

2

The epithalamus has what components?

Pineal body
Parapineal body (organ)
Choroid plexus
Habenulae

3

What are the components of the hypothalamus?

Optic chiasma (is cephalic boundary)
Infundibular recess and stalk
Posterior pituitary (pars nervosa)

4

This part of the epithalamus is thought to be involved in emotional and visceral responses to odors.

Habenular nuclei
Pineal body

5

The habenular nuclei and pineal body projects to the septal nuclei (in thalamus) via...

Stria medullaris thalami

6

The habenular nuclei projects to the interpeduncular nucleus via...

Habenulointerpeduncular tract

7

The pineal body secretes _________, which regulates circadian rhythms. Activity is modulated by light-dark cycle.

Melatonin

8

Calcification of the _______ _______ accrues with maturity, and lesions of this are associated with precocious puberty.

Pineal body

9

This makes up 80 percent of the diencephalon.

Thalamus

10

The thalamus is separated from the hypothalamus via the...

Hypothalamic sulcus (groove)

11

Landmarks in the thalamus are...

Optic recess
Infundibular recess
Pineal recess

12

The thalamus has two commissures, which are the ________ and is above the pineal recess, and the ________ which is below the pineal recess.

Habenular
Posterior

13

This is what relays all sensory information except smell to the cerebral cortex. It provides crude awareness.

Thalamus

14

T/F. The thalamus provides the initial autonomic response of the body to intense pain (physiologic shock).

True

15

This type of sensory relay nuclei in the thalamus is auditory and projects to the primary auditory cortex in the temporal lobe.

Medial geniculate body

16

This type of sensory relay nuclei in the thalamus is visual and projects to the primary visual cortex in the occipital cortex.

Lateral geniculate body

17

This type of sensory relay nuclei in the thalamus provides general sensations and taste.

Ventral posterior nuclei

18

This type of motor relay nuclei in the thalamus is voluntary motor.

Ventral lateral

19

This type of motor relay nuclei in the thalamus is voluntary motor and arousal.

Ventral anterior

20

The ________ ________ nuclei modify neuronal activity in the thalamus. It may be involved in regulating sleep-wakefulness cycle and levels of awareness.

Thalamus reticular

21

The ________ nuclei in the thalamus is concerned with certain emotions and memory. It receives input from the hippocampus and mamillary bodies (mamillothalamic tract).

Anterior

22

The white matter of the thalamus contains what?

Internal capsule
Stratum zonale
External medullary lamina
Internal medullary lamina

23

T/F. The thalamus controls/integrates ANS.

False. The hypothalamus controls/integrates ANS.

24

The (ANTERIOR/POSTERIOR) hypothalamus raises arterial blood pressure and increases heart rate.

Posterior

25

The (ANTERIOR/POSTERIOR) hypothalamus lowers arterial blood pressure and decreases heart rate (anterior).

Anterior

26

ADH and oxytocin is produced by what?

Hypothalamus

27

What controls normal body temperature, regulates food intake, and maintains extracellular fluid volume?

Hypothalamus

28

What contains the sexual center in the brain?

Hypothalamus

29

This nuclei in the hypothalamus is involved in olfactory reflexes and emotional responses to odors. It relay stations for olfactory neurons to inferior colliculi.

Mammillary bodies

30

This nuclei in the hypothalamus send projections (axons) that release neurohormones oxytocin and vasopressin into capillaries in the posterior pituitary.

Supraoptic nuclei