1
RIO SALADO BIO 201 EXAM 3 QUESTIONS &
100% CORRECT ANSWERS
2025/26 LATEST TEST
Myelination of the nerve fibers in the central nervous system is the job of
the oligodendrocyte.
T/F
✓ -:- True
If bacteria invaded the CNS tissue, microglia would migrate to the area to
engulf and destroy them. T/F
✓ -:- True
Neurons in the CNS are organized into functional groups. T/F
✓ -:- True
Efferent nerve fibers may be described as motor nerve fibers. T/F
✓ -:- True
Voltage is always measured between two points and may be called the
potential between these two points. T/F
,2
1|Page | Grade A+| 2024/2025
,3
✓ -:- True
The all-or-none phenomenon as applied to nerve conduction states that the
whole nerve cell must be stimulated for conduction to take place. T/F
✓ -:- False. The all-or-none phenomenon states that the
action potential either happens completely or it doesn't
happen at all.
Enkephalins and endorphins are peptides that act like morphine. T/F
✓ -:- True
Action potentials can be generated by virtually all cells of the body
because all cells possess cell membranes. T/F
✓ -:- False. Only cells with excitable membranes, such as
neurons and muscle cells, can generate action potentials.
Acetylcholine is not a biogenic amine. T/F
✓ -:- True
, 4
In myelinated axons the voltage-gated sodium channels are concentrated
at the nodes of Ranvier. T/F
RIO SALADO BIO 201 EXAM 3 QUESTIONS &
100% CORRECT ANSWERS
2025/26 LATEST TEST
Myelination of the nerve fibers in the central nervous system is the job of
the oligodendrocyte.
T/F
✓ -:- True
If bacteria invaded the CNS tissue, microglia would migrate to the area to
engulf and destroy them. T/F
✓ -:- True
Neurons in the CNS are organized into functional groups. T/F
✓ -:- True
Efferent nerve fibers may be described as motor nerve fibers. T/F
✓ -:- True
Voltage is always measured between two points and may be called the
potential between these two points. T/F
,2
1|Page | Grade A+| 2024/2025
,3
✓ -:- True
The all-or-none phenomenon as applied to nerve conduction states that the
whole nerve cell must be stimulated for conduction to take place. T/F
✓ -:- False. The all-or-none phenomenon states that the
action potential either happens completely or it doesn't
happen at all.
Enkephalins and endorphins are peptides that act like morphine. T/F
✓ -:- True
Action potentials can be generated by virtually all cells of the body
because all cells possess cell membranes. T/F
✓ -:- False. Only cells with excitable membranes, such as
neurons and muscle cells, can generate action potentials.
Acetylcholine is not a biogenic amine. T/F
✓ -:- True
, 4
In myelinated axons the voltage-gated sodium channels are concentrated
at the nodes of Ranvier. T/F
