Topic 19: Nervous System - CNS - Diencephalon +Midbrain Flashcards
1
Q
What type of matter is in the diencephalon?
A
all gray matter
2
Q
What are the 2 structures in the diencephalon?
A
- thalamus
- hypothalamus
3
Q
What is the structure of the thalamus?
A
- 2 lobes connected by intermediate mass (bridge through 3rd ventricle)
4
Q
What is the function of the thalamus?
A
- relay station for impulses coming to cortex (from spinal cord)
5
Q
Where is the hypothalamus?
A
- inferior to thalamus and above pituitary
6
Q
What is the function of the hypothalamus?
A
- major regulator of the internal environment (visceral control)
ex. blood pressure, heart rate
7
Q
What does the midbrain connect?
A
- pons and diencephalon
8
Q
What aqueduct does the midbrain contain?
A
cerebral aqueduct
9
Q
What does the anterior portion of the midbrain contain?
A
- cerebral peduncles (projection tracts)
10
Q
What does the posterior portion of the cerebral peduncles contain? (3)
A
- 4 nuclei called corpora quadrigemina
- 2 superior colliculi
- 2 inferior colliculi
11
Q
What is the function of superior colliculi?
A
visual reflexes
12
Q
What is the function of inferior colliculi?
A
- hearing
