Diencephalon quiz

Question 1

5 subdivisions

Answer 1

1. 3rd ventricle
2. epithalamus
3. thalamus
4. hypothalamus
5. subthalamus

Question 2

Functions

Answer 2

1. sensory input to the cerebrum
2. integrative and relay
3. autonomic and endocrine

Question 3

What is just superior to the midbrain tectum?

Answer 3

Epithalamus

Question 4

What does the epithalamus include?

Answer 4

Pineal gland and posterior commissure

Question 5

What is the other name of the pineal gland?

Answer 5

Epiphysis cerebri

Question 6

What is the pineal gland filled with?

Answer 6

Epiphyseal cells, capillary beds, and glial support cells

Question 7

What are the calcifications called in the pineal gland?

Answer 7

Brain sand

Question 8

What does the pineal gland secrete?

Answer 8

Melatonin, serotonin, norepinephrine

Question 9

Melatonin is a function of the ___

Answer 9

Circadial cycle

Question 10

What is the largest commissure?

Answer 10

Corpus callosum

Question 11

Is the posterior commissure small or large?

Answer 11

Small but identifiable

Question 12

Where are pupillary light reflexes fibers and nuclei located?

Answer 12

Posterior commissure

Question 13

What does the thalamus include?

Answer 13

Lateral and medial geniculate bodies

Question 14

What joins the two halves of the thalamus?

Answer 14

Massa intermedia

Question 15

The thalamus forms the ___ of the 3rd ventricle

Answer 15

Lateral walls

Question 16

Function of the thalamus

Answer 16

All sensory input except olfaction

Question 17

An ___ of myelinated fibers runs through the substance of each thalamic mass and helps divide them into subdivisions

Answer 17

Internal medullary lamina

Question 18

What is the largest part of the thalamus only found in higher primates?

Answer 18

Pulvinar

Question 19

The hypothalamus forms the ___ of the 3rd ventricle

Answer 19

Floor

Question 20

Is the hypothalamus small or large?

Answer 20

Small, but very significant

Question 21

What does the hypothalamus include?

Answer 21

Infundibular stalk and optic chiasma

Question 22

T/F: the hypothalamus works unaided or uninfluenced from other centers

Answer 22

False

Question 23

Function of the hypothalamus

Answer 23

1. vague control over the basic drives of hunger, thirst, and sex
2. physical aspects of emotional expression

Question 24

Endocrine control from the hypothalamus: directly via ___ axon extensions into the ___ pituitary

Answer 24

Neuron; posterior

Question 25

Endocrine control from the hypothalamus: indirectly via ___ to control the release of ___ pituitary hormones

Answer 25

Neurohormones; anterior

Question 26

Supraoptic and paraventricular nuclei travel down via the ___

Answer 26

Hypothalamohypophyseal tract

Question 27

Supraoptic and paraventricular nuclei release ___

Answer 27

Oxytocin and ADH

Question 28

The pre optic area is a ___

Answer 28

Thermoregulator-> stimulates sweating as the body heats up

Question 29

The ___ nuclei is a satiety center

Answer 29

Ventromedial

Question 30

___ release releasing factors

Answer 30

Arcuate nuclei

Question 31

___ deal with short-term memory

Answer 31

Mammillary bodies

Question 32

___ is where forward memories stop being created for a while

Answer 32

Anterograde amnesia

Question 33

___ is not remembering things prior to an event

Answer 33

Retrograde amnesia

Question 34

Which area gives rise to the anterior pituitary and intermediate pituitary?

Answer 34

Rathke’s Pouch

Question 35

Releasing factors exert a controlling influence on the release of ___

Answer 35

Pituitary hormones

Question 36

Parts of the subthalamus

Answer 36

Parvocellular region of the red nucleus, SN

Question 37

Lesions to the ___ cause ballism or hemiballism

Answer 37

Corpus Luysi