WSU BIO 315 LECTURE EXAM 2 2026
QUESTIONS WITH VERIFIED
SOLUTIONS
Instructions: This exam contains multiple-choice questions covering the core
content tested on WSU Bio 315 Lecture Exam 2. Topics include nervous system
organization, neuroglia, neurons, sensory and motor systems, synaptic
transmission, and brain development.
1. What are the two main anatomical divisions of the nervous system?
A. Brain and Spinal Cord
B. Somatic and Autonomic Systems
C. Central and Peripheral Nervous Systems
D. Neurons and Neuroglia
Correct Answer: C — Central and Peripheral Nervous Systems
Rationale: The nervous system is divided into the central nervous
system (CNS), consisting of the brain and spinal cord, and the
peripheral nervous system (PNS), consisting of all nervous tissue
outside the CNS .
,2. What are the components of the central and peripheral nervous
systems?
A. Only neurons
B. Neurons and Supporting Cells
C. Only supporting cells
D. Sensory and motor neurons
Correct Answer: B — Neurons and Supporting Cells
Rationale: Both the CNS and PNS are composed of neurons and
supporting cells (neuroglia) .
3. What are the supporting cells of the central nervous system
collectively called?
A. Schwann cells
B. Satellite cells
C. Neuroglia
D. Neurons
,Correct Answer: C — Neuroglia
Rationale: The supporting cells of the CNS are called neuroglia. They
outnumber neurons 10:1 .
4. Which neuroglia cells play a role in maintaining the blood-brain
barrier?
A. Ependymal cells
B. Microglial cells
C. Astrocytes
D. Schwann cells
Correct Answer: C — Astrocytes
Rationale: Astrocytes maintain the blood-brain barrier .
5. Which supporting cells of the CNS produce myelin sheaths?
A. Astrocytes
B. Microglia
, C. Ependymal cells
D. Oligodendrocytes
Correct Answer: D — Oligodendrocytes
Rationale: Oligodendrocytes produce myelin sheaths in the CNS .
6. Which supporting cells of the CNS help produce cerebrospinal fluid
(CSF)?
A. Astrocytes
B. Microglia
C. Ependymal Cells
D. Oligodendrocytes
Correct Answer: C — Ependymal Cells
Rationale: Ependymal cells help produce CSF .
7. Which supporting cells of the CNS contain phagocytes for protection?
A. Astrocytes
B. Microglia
QUESTIONS WITH VERIFIED
SOLUTIONS
Instructions: This exam contains multiple-choice questions covering the core
content tested on WSU Bio 315 Lecture Exam 2. Topics include nervous system
organization, neuroglia, neurons, sensory and motor systems, synaptic
transmission, and brain development.
1. What are the two main anatomical divisions of the nervous system?
A. Brain and Spinal Cord
B. Somatic and Autonomic Systems
C. Central and Peripheral Nervous Systems
D. Neurons and Neuroglia
Correct Answer: C — Central and Peripheral Nervous Systems
Rationale: The nervous system is divided into the central nervous
system (CNS), consisting of the brain and spinal cord, and the
peripheral nervous system (PNS), consisting of all nervous tissue
outside the CNS .
,2. What are the components of the central and peripheral nervous
systems?
A. Only neurons
B. Neurons and Supporting Cells
C. Only supporting cells
D. Sensory and motor neurons
Correct Answer: B — Neurons and Supporting Cells
Rationale: Both the CNS and PNS are composed of neurons and
supporting cells (neuroglia) .
3. What are the supporting cells of the central nervous system
collectively called?
A. Schwann cells
B. Satellite cells
C. Neuroglia
D. Neurons
,Correct Answer: C — Neuroglia
Rationale: The supporting cells of the CNS are called neuroglia. They
outnumber neurons 10:1 .
4. Which neuroglia cells play a role in maintaining the blood-brain
barrier?
A. Ependymal cells
B. Microglial cells
C. Astrocytes
D. Schwann cells
Correct Answer: C — Astrocytes
Rationale: Astrocytes maintain the blood-brain barrier .
5. Which supporting cells of the CNS produce myelin sheaths?
A. Astrocytes
B. Microglia
, C. Ependymal cells
D. Oligodendrocytes
Correct Answer: D — Oligodendrocytes
Rationale: Oligodendrocytes produce myelin sheaths in the CNS .
6. Which supporting cells of the CNS help produce cerebrospinal fluid
(CSF)?
A. Astrocytes
B. Microglia
C. Ependymal Cells
D. Oligodendrocytes
Correct Answer: C — Ependymal Cells
Rationale: Ependymal cells help produce CSF .
7. Which supporting cells of the CNS contain phagocytes for protection?
A. Astrocytes
B. Microglia
