Question 1

Nerve fibers that conduct impulses away from the central nervous system are called

Accepted Answer

A)  efferent. 
B)  afferent. 
C)  dendrites. 
D)  sensory.

Question 2

The initial drive to move comes from

Accepted Answer

A)  the motor cortex. 
B)  the cerebellum. 
C)  subcortical and cortical areas. 
D)  feedback from motor units.

Question 3

Parkinson's disease is a disorder of the basal ganglia resulting in

Accepted Answer

A)  an impairment in maximal speed of movement. 
B)  increased involuntary movement of tremors. 
C)  an impairment in hearing. 
D)  impaired reaction times.

Question 4

The term kinesthesia refers to

Accepted Answer

A)  the study of movement. 
B)  a lack of sensation in the muscles and joints. 
C)  conscious recognition of the position of body parts with respect to each other. 
D)  the transmission of a nerve impulse along the axon.

Question 5

The action potential is generated when a stimulus

Accepted Answer

A)  opens sodium channels. 
B)  opens voltage-gated potassium channels. 
C)  causes the interior of the cell to become more negative. 
D)  blocks the entry of sodium into the cell.

Question 6

The summing of many EPSPs from a single pre-synaptic neuron over a short time period is called

Accepted Answer

A)  spatial summation. 
B)  temporal summation. 
C)  IPSP. 
D)  hyperpolarization.

Question 7

Voluntary movements are planned and executed by the motor cortex without outside influence from other areas of the nervous system.

Accepted Answer

A) True 
 B)False

Question 8

An excitatory neurotransmitter results in increased neuronal permeability to

Accepted Answer

A)  sodium and results in IPSPs. 
B)  sodium and results in EPSPs. 
C)  potassium and results in IPSPs. 
D)  potassium and results in EPSPs.

Question 9

The sympathetic postganglionic neurotransmitter is acetylcholine, and the parasympathetic postganglionic neurotransmitter is norepinephrine.

Accepted Answer

A) True 
 B)False

Question 10

The Golgi tendon organs monitor

Accepted Answer

A)  tension produced by muscular contraction. 
B)  the length of muscle. 
C)  the concentration of sodium ions in the sarcoplasm. 
D)  the position of joints during movement.

Question 11

The autonomic nervous system can be divided into two functional and anatomical divisions called

Accepted Answer

A)  sympathetic and unsympathetic. 
B)  sympathetic and parasympathetic. 
C)  afferent and efferent. 
D)  CNS and PNS.

Question 12

Equilibrium and balance require input from the

Accepted Answer

A)  vestibular apparatus. 
B)  eyes. 
C)  joint, tendon, and muscle receptors. 
D)  all of the above.

Exam 8: The Nervous System: Structure and Control of Movement