Module 7 - The Nervous System

Question 0

The PNS (peripheral nervous system) is composed of what?

Answer 0

Nerves and ganglia outside the CNS.

Question 1

The CNS (central nervous system) is composed of what?

Answer 1

The brain and spinal cord.

Question 2

The afferent division of the PNS is also termed what?

Answer 2

The sensory division.

Question 3

The efferent division of the PNS is also termed what?

Answer 3

The motor division.

Question 4

Somatic motor nervous system (SMNS)

Answer 4

PNS neurons that transmit action potentials from the CNS to skeletal muscles. (Voluntary)

Question 5

Autonomic nervous system (ANS)

Answer 5

PNS neurons that transmit action potentials from the CNS to smooth muscles, cardiac muscles, and glands. (Involuntary)

Question 6

Sympathetic division

Answer 6

Division of the ANS that generally prepares the body for increased energy expenditure

Question 7

Parasympathetic division

Answer 7

Division of the ANS that regulates resting and nutrition-related functions

Question 14

Association neuron

Answer 14

A neuron that conducts action potentials from one neuron to another neuron within the CNS.

Question 15

Excitability

Answer 15

The ability to undergo an action potential in response to a stimulus

Question 16

Potential difference

Answer 16

A measure of the charge difference across the cell membrane.

Question 19

Nerves

Answer 19

Bundles of neuron axons and their coverings, found OUTSIDE the CNS

Question 20

Ganglia

Answer 20

Collections of neuron cell bodies found outside the CNS

Question 21

Spinal Nerves

Answer 21

Nerves that originate from the spinal cord

Question 22

Cranial Nerves

Answer 22

Nerves that originate from the brain

Question 23

Afferent neurons

Answer 23

Neurons that transmit action potentials from the sensory organs to the CNS

Question 24

Efferent neurons

Answer 24

Neurons that transmit action potentials from CNS to the effector organs