5. The Central Nervous System (Summary)

Question 1

The afferent division of the nervous system:

Answer 1

Transmits information from the periphery to the central nervous system

Question 2

The two divisions of the autonomic nervous system are the:

Answer 2

Sympathetic and parasympathetic division

Question 3

The CNS neuroglia comprises:

Answer 3

Astrocytes, oligodendrocytes and microglia

Question 4

What is the function of glial cells?

Answer 4

[1]
Maintaining a neurones chemical environment.

[2]
Insulating axons

[3]
Transferring nutrients to neurons

Question 5

Sensory Nurones:

Answer 5

Are considered to be afferent neutrons because they carry nerve impulse from sensory stimuli and towards the nervous system

Question 6

Functions of astrocytes:

Answer 6

[1]
Structural support

[2]
Modulation of synaptic transmission

[3]
Nervous system repair

Question 7

The frontal lobes of the cerebrum are involved with:

Answer 7

Voluntary motor functions

Question 8

The parasympathetic nervous system:

Answer 8

Effects are largely maintenance and conservation

Question 9

The v_______ of an a_____ p________ in a myelinatated axon is _______ ____ the v_______ of an a_____ p________ in an u___________ a___.

Answer 9

The velocity of an action potential in a myelinatated axon is greater than the velocity of an action potential in an unmyelinated axon.