Lecture 6-Basics Of The CNS

Question 1

What is emergence?

Answer 1

Complex behaviour emerges from interactions of individual, relatively simple units (neurons)

Question 2

What are the three parts of the brain stem?

Answer 2

Midbrain
Pons
Medulla

Question 3

What is decussation?

Answer 3

Body controlled by contralateral side of the brain as fibres cross from one hemisphere to the other

Question 4

What is the role of the frontal lobe?

Answer 4

Higher cognition, motor and speech

Question 5

What is the role of the parietal lobe?

Answer 5

Sensation, spatial awareness

Question 6

What is the role of the temporal lobe?

Answer 6

Memory, smell and hearing

Question 7

What is the role of the occipital lobe?

Answer 7

Vision

Question 8

What is the role of the cerebellum?

Answer 8

Coordination and motor

Question 9

What is the optic chiasm?

Answer 9

Site where optic nerve fibres cross over

Question 10

What is the uncus?

Answer 10

Part of the temporal lobe that can herniate and compress the midbrain

Question 11

What is the corpus callosum?

Answer 11

Fibres connecting two cerebral hemispheres

Question 12

True or false: endoderm develops into the CNS

Answer 12

FALSE - ectoderm

Question 13

What does the invagination of ectoderm depend on?

Answer 13

Folic acid

Question 14

True or false: regeneration doesn’t occur in the PNS

Answer 14

FALSE - occurs in the PNS, not in the CNS

Question 15

True or false: Schwann cells are part of the PNS

Answer 15

TRUE

Question 16

What are the immune cells of the CNS?

Answer 16

Microglia