8.3 CNS and Sleep

Question 1

What are the 3 types of neurons?

Answer 1

1. Sensory
2. Interneuron
3. Motor

Question 2

Draw a sensory neuron

Answer 2

Cell body is on the axon

Question 3

Draw a motor neuron

Answer 3

Cell body is within the dendrites

Question 4

What are the 5 main regions of the CNS

Answer 4

1. Telencephalon (brain)
2. Cerebellum
3. Diencephalon
4. Brain stem
5. Spinal cord

Question 5

What is another name for the Telencephalon

Answer 5

Cerebral cortex/ brain

Question 6

How is the cerebral cortex divided?

Answer 6

It is divided into two vortices by the saggiato plane. The right and left cerebral hemispheres.

Divided into lobes

Question 7

What are the 4 lobes and their functions?

Answer 7

Frontal lobe - decision making, problem solving and planning
Parietal lobe - receives and processes sensory information
Temporal lobe - memory, language, emotion, and hearing
Occipital lobe - sight

Question 8

Primary motor cortex

Answer 8

Execute movements

Question 9

Somatosensory cortex

Answer 9

Receives sensory input from the body

Question 10

Functions of the cerebellum

Answer 10

Coordination, balance, equilibrium, muscle tone, motor movement

Question 11

Diencephalon

Answer 11

B/w the cerebral cortex and midbrain
“Gateway to the cerebr; cortex”
Relax sensory and motor signals
Regulation of consciousness, sleep and alertness
Multiple nuclei (groups of cell bodies in the CNS)

Question 12

What is included in the brain stem?

Answer 12

Midbrain, pons, medulla

Question 13

Mesencephalon (midbrain) function

Answer 13

Smallest region responsible for hearing, seeing and orienting movements

Question 14

Pons and medulla

Answer 14

Above the spinal cord and below the midbrain responsible for sleep wale bahvior and breathing and cardiovascular system