Diencephalon

Question 1

Diencephalon

Answer 1

Brain subdivision completely surrounded by cerebrum. Superior to midbrain and pituitary gland connects to it

Question 2

Diencephalon Components from Posterior to Anterior

Answer 2

Epithalamus -> Thalamus -> Hypothalamus -> Third Ventricle

Question 3

Epithalamus

Answer 3

Bump coming off the back of it

Question 4

Thalamus

Answer 4

Bulk of Diencephalon located here

Question 5

Hypothalamus

Answer 5

Located below the Thalamus

Question 6

Third Ventricle

Answer 6

Space within Diencephalon

Question 7

Third Ventricle Components

Answer 7

Thalamus, Hypothalamus, Epithalamus form its floor, walls, and roof
Produces CSF

Question 8

Melatonin Definition

Answer 8

A homorome; Horomone is a chemical released in the blood stream and affects another organ

Question 9

Pineal Gland Function

Answer 9

Produces Melatonin
Regulates circadian rhythm (24 Hour Body Clock) through release of Melatonin
Hypothalamus oversees pineal gland

Question 10

Thalamus

Answer 10

Two oval masses of gray matter covered with white matter

Question 11

Thalamus Function

Answer 11

Relay Point and processing center for all sensory impulses (Except for Olfaction) running to cerebrum.
Also acts as sensory information filter

Question 12

If there was no Thalamus, how would this affect the cerebrums interpretation of sensory stimuli

Answer 12

Sensory Overload

Question 13

Hypothalamus Functions

Answer 13

Autonomic Nervous System Control Center
Endocrine System Control Center
Body Temperature Regulation
Water and Electrolyte Balance
Regulation of Hunger/Food Intake
Regulation of Sleep-Wake Cycles
Control of Emotional Behavior

Question 14

Autonomic Nervous System Control Center

Answer 14

“President”
Projects descending axons to autonomic nuclei
Influences HR, BP, Digestive Activies, and Repiration

Question 15

Endocrine System Control Center

Answer 15

Endocrine System: Secretes hormones into the bloodstream

Question 16

Hypothalamus produces what horomones and secreted by what?

Answer 16

Produces Oxytocin and Antidiuretic Homormone.

Secreted by Posterior Pituitary

Question 17

Oxytocin Horomone Function

Answer 17

For Reproductive System

Question 18

Antidiuretic Hormone Function (ADH)

Answer 18

Tells kidneys to concrete urine (reduce water content) ; secreted when you are dehydrated

Question 19

Endocrine System Control Center (2)

Answer 19

Also produces hormones that regulate hormonal secretion of the anterior pituitary

Question 20

Body Temperature Regulation

Answer 20

Senses temperature of blood in blood vessels traveling through hypothalamus
If temperature too high, body will release excess heat (Sweating)

Question 21

Water and Electrolyte Balance

Answer 21

Examines blood in blood vessels

“Thirst Center”

Question 22

Electrolyte

Answer 22

Ions or molecules that can carry electric current (Na+ or K+)

Question 23

Regulation of Hunger/Food Intake

Answer 23

Hunger or Feed Center
Satiety Center
Examines blood glucose center

Question 24

Regulation of Sleep-Wake (Circadian) Cycles

Answer 24

Will regulate the pineal glands secretion of melatonin.

Upon exposure to light, hypothalamus raises body temperature and tells pineal gland.

Question 25

If exposure to light affects the hypothalamus regulation of our circadian rhythm, then are there activities that we do that interfere with this regulation?

Answer 25

Having the light from the cell phone or TV’s before bed, reduces the amount of melatonin that is produced.

Question 26

Control of Emotional Behavior

Answer 26

Hypothalamus located center of limbic system. Controls emotional response, pleasures, aggression, fear, rage, contentment,
May expressing emotional feelings as physical changes (blushing)