Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. What is the primary function of the nervous system?
A. Digestion
B. Control and coordination
C. Blood transport
D. Hormone storage
Correct Answer: B. Control and coordination
Rationale: The nervous system regulates body activities and
responses.
2. What is the basic unit of the nervous system?
A. Cell membrane
B. Neuron
C. Tissue
D. Organ
,Correct Answer: B. Neuron
Rationale: Neurons transmit electrical and chemical signals.
3. What is the function of dendrites?
A. Send signals
B. Receive signals
C. Store energy
D. Produce hormones
Correct Answer: B. Receive signals
Rationale: Dendrites receive incoming signals.
4. What is the function of the axon?
A. Receive signals
B. Send signals
C. Protect cell
D. Store DNA
Correct Answer: B. Send signals
Rationale: Axons carry impulses away from the neuron.
5. What is myelin sheath?
A. Protein
B. Fatty covering
C. Enzyme
D. Hormone
,Correct Answer: B. Fatty covering
Rationale: It insulates axons and speeds transmission.
6. What is the central nervous system (CNS)?
A. Nerves only
B. Brain and spinal cord
C. Muscles
D. Organs
Correct Answer: B. Brain and spinal cord
Rationale: CNS processes and integrates information.
7. What is the peripheral nervous system (PNS)?
A. Brain
B. Spinal cord
C. Nerves outside CNS
D. Muscles
Correct Answer: C. Nerves outside CNS
Rationale: Connects CNS to the rest of the body.
8. What is a reflex?
A. Conscious action
B. Automatic response
C. Hormone release
D. Digestion
, Correct Answer: B. Automatic response
Rationale: Reflexes occur without conscious thought.
9. What is a synapse?
A. Cell body
B. Junction between neurons
C. Tissue
D. Organ
Correct Answer: B. Junction between neurons
Rationale: Where communication occurs.
10. What are neurotransmitters?
A. Cells
B. Chemical messengers
C. Proteins
D. Lipids
Correct Answer: B. Chemical messengers
Rationale: Transmit signals across synapses.
11. What is the function of the brain?
A. Digestion
B. Control center
C. Circulation
D. Respiration