251 Week 3 Quiz Exam 1 (Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. What is the basic structural and functional unit of the nervous
system?
A. Glial cell
B. Neuron
C. Axon
D. Dendrite
Correct Answer: B
Rationale: Neurons are the primary signaling cells of the nervous
system.
2. Which part of the neuron receives signals from other neurons?
A. Axon
B. Dendrite
C. Soma
D. Synaptic terminal
Correct Answer: B
Rationale: Dendrites receive incoming signals from other neurons.
,3. Which part of the neuron conducts impulses away from the cell
body?
A. Axon
B. Dendrite
C. Soma
D. Synapse
Correct Answer: A
Rationale: Axons transmit signals from the neuron to target cells.
4. What is the gap between two neurons called?
A. Dendritic cleft
B. Axon hillock
C. Synapse
D. Myelin sheath
Correct Answer: C
Rationale: The synapse is the junction where neurons
communicate.
5. Which glial cell produces myelin in the CNS?
A. Schwann cell
B. Oligodendrocyte
C. Astrocyte
D. Microglia
,Correct Answer: B
Rationale: Oligodendrocytes myelinate axons in the CNS.
6. Which glial cell produces myelin in the PNS?
A. Schwann cell
B. Oligodendrocyte
C. Astrocyte
D. Microglia
Correct Answer: A
Rationale: Schwann cells form myelin around peripheral nerves.
7. What part of the neuron integrates incoming signals?
A. Axon hillock
B. Soma
C. Dendrite
D. Synapse
Correct Answer: B
Rationale: The soma (cell body) integrates signals from dendrites.
8. Which ion is responsible for the depolarization phase of an
action potential?
A. Potassium
B. Sodium
, C. Calcium
D. Chloride
Correct Answer: B
Rationale: Sodium ions rush into the neuron during depolarization.
9. Which ion is responsible for repolarization during an action
potential?
A. Sodium
B. Potassium
C. Calcium
D. Chloride
Correct Answer: B
Rationale: Potassium ions leave the neuron to restore resting
potential.
10. Which division of the nervous system controls voluntary
movements?
A. Autonomic nervous system
B. Somatic nervous system
C. Sympathetic division
D. Parasympathetic division
Correct Answer: B
Rationale: The somatic nervous system regulates voluntary motor
activity.
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A - Chamberlain
1. What is the basic structural and functional unit of the nervous
system?
A. Glial cell
B. Neuron
C. Axon
D. Dendrite
Correct Answer: B
Rationale: Neurons are the primary signaling cells of the nervous
system.
2. Which part of the neuron receives signals from other neurons?
A. Axon
B. Dendrite
C. Soma
D. Synaptic terminal
Correct Answer: B
Rationale: Dendrites receive incoming signals from other neurons.
,3. Which part of the neuron conducts impulses away from the cell
body?
A. Axon
B. Dendrite
C. Soma
D. Synapse
Correct Answer: A
Rationale: Axons transmit signals from the neuron to target cells.
4. What is the gap between two neurons called?
A. Dendritic cleft
B. Axon hillock
C. Synapse
D. Myelin sheath
Correct Answer: C
Rationale: The synapse is the junction where neurons
communicate.
5. Which glial cell produces myelin in the CNS?
A. Schwann cell
B. Oligodendrocyte
C. Astrocyte
D. Microglia
,Correct Answer: B
Rationale: Oligodendrocytes myelinate axons in the CNS.
6. Which glial cell produces myelin in the PNS?
A. Schwann cell
B. Oligodendrocyte
C. Astrocyte
D. Microglia
Correct Answer: A
Rationale: Schwann cells form myelin around peripheral nerves.
7. What part of the neuron integrates incoming signals?
A. Axon hillock
B. Soma
C. Dendrite
D. Synapse
Correct Answer: B
Rationale: The soma (cell body) integrates signals from dendrites.
8. Which ion is responsible for the depolarization phase of an
action potential?
A. Potassium
B. Sodium
, C. Calcium
D. Chloride
Correct Answer: B
Rationale: Sodium ions rush into the neuron during depolarization.
9. Which ion is responsible for repolarization during an action
potential?
A. Sodium
B. Potassium
C. Calcium
D. Chloride
Correct Answer: B
Rationale: Potassium ions leave the neuron to restore resting
potential.
10. Which division of the nervous system controls voluntary
movements?
A. Autonomic nervous system
B. Somatic nervous system
C. Sympathetic division
D. Parasympathetic division
Correct Answer: B
Rationale: The somatic nervous system regulates voluntary motor
activity.
