The Diencephalon

Question 1

The roof of the diencephalon superior to the third ventricle.

Answer 1

Epithalamus

Question 2

Lies in the posterior, inferior portion of the epithalamus, secretes melatonin.

Answer 2

Pineal Gland

Question 3

Hormone important in the regulation of day-night cycles and reproductive function.

Answer 3

Melatonin

Question 4

Sits superior to the midbrain. The final relay point for ascending sensory information that will be relayed to the cerebral cortex.

Answer 4

Thalamus

Question 5

Part of the limbic system

Answer 5

Anterior Group

Question 6

Integrates sensory information for the projection to the frontal lobes of the cerebral hemispheres.

Answer 6

Medial Group

Question 7

Projects sensory information to the primary sensory cortex; relays information from the cerebellum and basal nuclei to the motor area of the cerebral cortex.

Answer 7

Ventral Group

Question 8

Integrates sensory information for projection to association areas of the cerebral cortex, projects visual information to the visual cortex, projects auditory information to the auditory cortex.

Answer 8

Posterior Group

Question 9

Contains important control and integrative centers.

Answer 9

Hypothalamus

Question 10

Autonomic centers control the cardiovascular and vasomotor centers of the medulla oblongata.

Answer 10

Hypothalamus

Question 11

Regulates body temperature by coordinated adjustments in blood flow and sweat gland activity.

Answer 11

Hypothalamus

Question 12

Coordinates day-night cycles of activity/inactivity.

Answer 12

Hypothalamus

Question 13

Hormonal centers secrete chemical messengers that control endocrine cells of the anterior pituitary gland and secrete two hormones into the circulation at the posterior pituitary gland.

Answer 13

Hypothalamus

Question 14

A narrow stalk that extends inferiorly, connecting the floor of the hypothalamus to the pituitary gland.

Answer 14

Infundibulum

Question 15

Control feeding reflexes such as licking and swallowing, relay station for olfactory pathways.

Answer 15

Mammillary Bodies

Question 16

Attached to the hypothalamus.

Answer 16

Hypophysis (Pituitary Gland)

Question 17

Name the main components of the diencephalon.

Answer 17

The epithalamus, the thalamus, and the hypothalamus

Question 18

Damage to the lateral geniculate nuclei of the thalamus would interfere with what function?

Answer 18

It would interfere with the flow of visual information and thus affect the sense of sight.

Question 19

Which component of the diencephalon is stimulated by changes in body temperature?

Answer 19

The preoptic are of the hypothalamus.