A&p 251 exam 1 questions with answers
What are the two major components of the central
nervous system? - CORRECT ANSWERS ✔✔brain and
spinal cord
An increase in the heart rate would most likely be due to
the ______ branch of the autonomic nervous system? -
CORRECT ANSWERS ✔✔Sympathetic
What are the three functional categories for information
processing over the entire nervous system? What does
the efferent path generally target? - CORRECT ANSWERS
✔✔Sensory, integration, and motor.
Efferent/ motor output= muscles and glands
Which type of neuroglial cells is the insulation for the CNS
and which for the PNS? - CORRECT ANSWERS
✔✔Oligodendrocytes
Schwann cells
Name one location for the ependymal cells - CORRECT
ANSWERS ✔✔Living brain ventricles and spinal cord
central canal
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, What are the three basic parts of a neuron? - CORRECT
ANSWERS ✔✔dendrites, cell body, axon
What is the more familiar name for the Nissl bodies? -
CORRECT ANSWERS ✔✔Rough ER
Where are nodes of Ranvier located? What do they
provide? - CORRECT ANSWERS ✔✔Gaps between
Schwann cells
Faster action potential
What initial section of the axon is considered the "trigger
zone"? - CORRECT ANSWERS ✔✔axon hillock
What are the three structural classifications of neurons?
How would they differ in basic appearance? - CORRECT
ANSWERS ✔✔Multipolar, bipolar, unipolar. # of
connections to cell body
What is the resting membrane potential? - CORRECT
ANSWERS ✔✔-70mV
What contributes to the resting potential? - CORRECT
ANSWERS ✔✔K+, Na+, Ca2+, Cl-
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What are the two major components of the central
nervous system? - CORRECT ANSWERS ✔✔brain and
spinal cord
An increase in the heart rate would most likely be due to
the ______ branch of the autonomic nervous system? -
CORRECT ANSWERS ✔✔Sympathetic
What are the three functional categories for information
processing over the entire nervous system? What does
the efferent path generally target? - CORRECT ANSWERS
✔✔Sensory, integration, and motor.
Efferent/ motor output= muscles and glands
Which type of neuroglial cells is the insulation for the CNS
and which for the PNS? - CORRECT ANSWERS
✔✔Oligodendrocytes
Schwann cells
Name one location for the ependymal cells - CORRECT
ANSWERS ✔✔Living brain ventricles and spinal cord
central canal
Page 1 of 9
, What are the three basic parts of a neuron? - CORRECT
ANSWERS ✔✔dendrites, cell body, axon
What is the more familiar name for the Nissl bodies? -
CORRECT ANSWERS ✔✔Rough ER
Where are nodes of Ranvier located? What do they
provide? - CORRECT ANSWERS ✔✔Gaps between
Schwann cells
Faster action potential
What initial section of the axon is considered the "trigger
zone"? - CORRECT ANSWERS ✔✔axon hillock
What are the three structural classifications of neurons?
How would they differ in basic appearance? - CORRECT
ANSWERS ✔✔Multipolar, bipolar, unipolar. # of
connections to cell body
What is the resting membrane potential? - CORRECT
ANSWERS ✔✔-70mV
What contributes to the resting potential? - CORRECT
ANSWERS ✔✔K+, Na+, Ca2+, Cl-
Page 2 of 9
