Exam 2- week 7 ppt 10 Diencephalon Epithalamus, Subthalamus, and Vasculature

Question 1

epithalamus is composed of

Answer 1

pineal glands and associated structures

Question 2

location of pineal gland

Answer 2

located posterior to thalamus and superior to superior colliculus

Question 3

Pineal gland releases ____ and have _____ function

Answer 3

~releases melatonin

~neuroendocrine function

Question 4

Pineal gland plays a role in

Answer 4

circadian rhythm

Question 5

Pineal gland and circadian rhythm

Answer 5

~Circadian secretion of melatonin with highest levels secreted in darkness
~roles in sleep/wakefulness cycles and clinical depression
~evidence that melatonin is reduced in ADHD

Question 6

In the pineal gland, there can be an accumulation of ____ deposits

Answer 6

Accumulation of calcareous deposits and useful to determine deviation of midline on MRIs and CTs

Question 7

Pineal gland can be considered..

Answer 7

7th chakra

third eye

Question 8

description of the location of subthalamus

Answer 8

wedge-shaped nucleus between thalamus and midbrain

Question 9

Blood supply to the hypothalamus

Answer 9

Penetrating branches of anterior communicating arteries

Question 10

Blood supply to the subthalamus

Answer 10

Penetrating branches of the Posterior Cerebral Artery

Question 11

Primary blood supply to the thalamus comes from

Answer 11

the posterior cerebral & posterior communicating arteries

Question 12

What are the 2 branches for the posterior cerebral & posterior communicating arteries?

Answer 12

~Thalamoperforating

~Thalamogeniculate

Question 13

Thalamoperforating

Answer 13

PCoA branches to caudal thalamus

Question 14

Thalamogeniculate

Answer 14

PCA branches throughout thalamus (cause of thalamic syndrome)