Neurobiology Examination Questions
and Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. Neurobiology is the study of:
A. Plant development
B. Animal classification
C. The nervous system and its functions
D. Microbial metabolism
Correct Answer: C. The nervous system and its functions
Rationale: Neurobiology examines the structure, function, development, and
disorders of nervous systems.
2. The basic functional unit of the nervous system is the:
A. Glial cell
B. Synapse
C. Neuron
D. Axon
Correct Answer: C. Neuron
Rationale: Neurons are specialized cells that transmit electrical and chemical
signals.
3. The main function of neurons is to:
,A. Produce hormones
B. Transmit information through electrical and chemical signals
C. Digest nutrients
D. Transport oxygen
Correct Answer: B. Transmit information through electrical and chemical signals
Rationale: Neurons communicate information throughout the nervous system.
4. The central nervous system consists of the:
A. Nerves and muscles
B. Brain and sensory organs
C. Brain and spinal cord
D. Spinal nerves only
Correct Answer: C. Brain and spinal cord
Rationale: The CNS includes the brain and spinal cord, which process and
coordinate information.
5. The peripheral nervous system consists of:
A. Brain tissue only
B. Nerves outside the brain and spinal cord
C. The spinal cord only
D. Hormone-producing organs
Correct Answer: B. Nerves outside the brain and spinal cord
Rationale: The PNS connects the CNS to the rest of the body.
6. The primary function of dendrites is to:
A. Release hormones
B. Produce myelin
,C. Receive signals from other cells
D. Store neurotransmitters
Correct Answer: C. Receive signals from other cells
Rationale: Dendrites receive incoming signals from other neurons.
7. The primary function of an axon is to:
A. Receive signals
B. Transmit signals away from the cell body
C. Produce neurotransmitters only
D. Generate hormones
Correct Answer: B. Transmit signals away from the cell body
Rationale: Axons carry electrical impulses toward other neurons or target cells.
8. The cell body of a neuron is also called the:
A. Synapse
B. Axon terminal
C. Soma
D. Myelin sheath
Correct Answer: C. Soma
Rationale: The soma contains the nucleus and maintains cellular functions.
9. The myelin sheath functions to:
A. Produce neurotransmitters
B. Increase the speed of nerve signal transmission
C. Absorb nutrients
D. Generate hormones
Correct Answer: B. Increase the speed of nerve signal transmission
, Rationale: Myelin electrically insulates axons and speeds conduction.
10. In the peripheral nervous system, myelin is produced by:
A. Astrocytes
B. Microglia
C. Schwann cells
D. Oligodendrocytes
Correct Answer: C. Schwann cells
Rationale: Schwann cells form myelin around peripheral axons.
11. In the central nervous system, myelin is produced by:
A. Schwann cells
B. Neurons
C. Oligodendrocytes
D. Microglia
Correct Answer: C. Oligodendrocytes
Rationale: Oligodendrocytes produce myelin in the brain and spinal cord.
12. Astrocytes primarily function to:
A. Produce antibodies
B. Support neurons and maintain the neural environment
C. Conduct muscle contraction
D. Produce hormones
Correct Answer: B. Support neurons and maintain the neural environment
Rationale: Astrocytes regulate extracellular conditions and provide metabolic
support.
and Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Neurobiology is the study of:
A. Plant development
B. Animal classification
C. The nervous system and its functions
D. Microbial metabolism
Correct Answer: C. The nervous system and its functions
Rationale: Neurobiology examines the structure, function, development, and
disorders of nervous systems.
2. The basic functional unit of the nervous system is the:
A. Glial cell
B. Synapse
C. Neuron
D. Axon
Correct Answer: C. Neuron
Rationale: Neurons are specialized cells that transmit electrical and chemical
signals.
3. The main function of neurons is to:
,A. Produce hormones
B. Transmit information through electrical and chemical signals
C. Digest nutrients
D. Transport oxygen
Correct Answer: B. Transmit information through electrical and chemical signals
Rationale: Neurons communicate information throughout the nervous system.
4. The central nervous system consists of the:
A. Nerves and muscles
B. Brain and sensory organs
C. Brain and spinal cord
D. Spinal nerves only
Correct Answer: C. Brain and spinal cord
Rationale: The CNS includes the brain and spinal cord, which process and
coordinate information.
5. The peripheral nervous system consists of:
A. Brain tissue only
B. Nerves outside the brain and spinal cord
C. The spinal cord only
D. Hormone-producing organs
Correct Answer: B. Nerves outside the brain and spinal cord
Rationale: The PNS connects the CNS to the rest of the body.
6. The primary function of dendrites is to:
A. Release hormones
B. Produce myelin
,C. Receive signals from other cells
D. Store neurotransmitters
Correct Answer: C. Receive signals from other cells
Rationale: Dendrites receive incoming signals from other neurons.
7. The primary function of an axon is to:
A. Receive signals
B. Transmit signals away from the cell body
C. Produce neurotransmitters only
D. Generate hormones
Correct Answer: B. Transmit signals away from the cell body
Rationale: Axons carry electrical impulses toward other neurons or target cells.
8. The cell body of a neuron is also called the:
A. Synapse
B. Axon terminal
C. Soma
D. Myelin sheath
Correct Answer: C. Soma
Rationale: The soma contains the nucleus and maintains cellular functions.
9. The myelin sheath functions to:
A. Produce neurotransmitters
B. Increase the speed of nerve signal transmission
C. Absorb nutrients
D. Generate hormones
Correct Answer: B. Increase the speed of nerve signal transmission
, Rationale: Myelin electrically insulates axons and speeds conduction.
10. In the peripheral nervous system, myelin is produced by:
A. Astrocytes
B. Microglia
C. Schwann cells
D. Oligodendrocytes
Correct Answer: C. Schwann cells
Rationale: Schwann cells form myelin around peripheral axons.
11. In the central nervous system, myelin is produced by:
A. Schwann cells
B. Neurons
C. Oligodendrocytes
D. Microglia
Correct Answer: C. Oligodendrocytes
Rationale: Oligodendrocytes produce myelin in the brain and spinal cord.
12. Astrocytes primarily function to:
A. Produce antibodies
B. Support neurons and maintain the neural environment
C. Conduct muscle contraction
D. Produce hormones
Correct Answer: B. Support neurons and maintain the neural environment
Rationale: Astrocytes regulate extracellular conditions and provide metabolic
support.
