Question 1

What membrane potential must generally be met in order to achieve threshold?

Accepted Answer

A)   -55 mV
B)   -30 mV
C)   -85 mV
D)   -70 mV

Question 2

The majority of synapses in the nervous system are:

Accepted Answer

A)   electrical.
B)   mechanical.
C)   chemical.
D)   voltage.

Question 3

Which type of fiber has the largest diameter?

Accepted Answer

A)   type A
B)   type B
C)   type C
D)   type D

Question 4

If the receptor site for a neurotransmitter were completely blocked:

Accepted Answer

A)   a weaker action potential would result.
B)   synaptic transmission would fail.
C)   neurotransmitter release would stop.
D)   the presynaptic neuron would release a different neurotransmitter.

Question 5

While driving home, Henry watched as a large truck drifted into his lane from oncoming traffic. Henry's central nervous system integrated this information to determine the position of his own vehicle, and then he made a decision to swerve his vehicle closer to the side of the road to avoid a head -on collision. From this scenario, determine the sensory information and his motor functions.

Accepted Answer

The collection of information about one'...

Question 6

During saltatory conduction, action potentials are generated:

Accepted Answer

A)   only at nodes of Ranvier of myelinated axons.
B)   when the entire axolemma is depolarized.
C)   along the entire length of the unmyelinated axon.
D)   regardless if threshold is reached.

Question 7

Sarah sensed a mosquito land on her arm and swatted it away with her hand. Which specific PNS division was responsible for the movement of Sarah's hand?

Accepted Answer

A)   autonomic nervous system
B)   somatic sensory division
C)   somatic motor division
D)   visceral sensory division

Question 8

Discuss the type of glial cell that becomes activated within a brain region affected by stroke.

Accepted Answer

Microglia are activated by injury within...

Question 9

Which neuroglial cell helps form the blood -brain barrier?

Accepted Answer

A)   satellite cell
B)   oligodendrocyte
C)   astrocyte
D)   ependymal cell

Exam 11: Introduction to the Nervous System Nervous Tissue

During saltatory conduction, action potentials are generated:

Correct Answer
verified

Discuss the type of glial cell that becomes activated within a brain region affected by stroke.

Correct Answer
verified
Microglia are activated by injury within...
View Answer

What membrane potential must generally be met in order to achieve threshold?

Correct Answer
verified

Which type of fiber has the largest diameter?

Correct Answer
verified

The majority of synapses in the nervous system are:

Correct Answer
verified

If the receptor site for a neurotransmitter were completely blocked:

Correct Answer
verified

Correct Answer
verified
The collection of information about one'...
View Answer

Which neuroglial cell helps form the blood ^-brain barrier?

Correct Answer
verified

Sarah sensed a mosquito land on her arm and swatted it away with her hand. Which specific PNS division was responsible for the movement of Sarah's hand?

Correct Answer
verified

Exam 11: Introduction to the Nervous System Nervous Tissue

During saltatory conduction, action potentials are generated:

Correct AnswerverifiedShow Answer

Discuss the type of glial cell that becomes activated within a brain region affected by stroke.

Correct AnswerverifiedMicroglia are activated by injury within...View AnswerShow Answer

What membrane potential must generally be met in order to achieve threshold?

Correct AnswerverifiedShow Answer

Which type of fiber has the largest diameter?

Correct AnswerverifiedShow Answer

The majority of synapses in the nervous system are:

Correct AnswerverifiedShow Answer

If the receptor site for a neurotransmitter were completely blocked:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThe collection of information about one'...View AnswerShow Answer

Which neuroglial cell helps form the blood -brain barrier?

Correct AnswerverifiedShow Answer

Sarah sensed a mosquito land on her arm and swatted it away with her hand. Which specific PNS division was responsible for the movement of Sarah's hand?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
Microglia are activated by injury within...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The collection of information about one'...
View Answer

Which neuroglial cell helps form the blood ^-brain barrier?

Correct Answer
verified

Correct Answer
verified