A&P MASTER TEST BANK PART 2 2026 NEWEST EXAM Q&A WITH RATIONALES|ALREADY GRADED A+

A&P MASTER TEST BANK PART 2 2026 NEWEST
EXAM Q&A WITH RATIONALES|ALREADY
GRADED A+
✅ Part 2 (Questions 101–200)


🧠 Unit: Nervous System (101–120)

101. The basic functional unit of the nervous system is the:
A. Axon
B. Neuron ✅
C. Dendrite
D. Synapse
Rationale: Neurons are specialized cells for signal transmission.



102. Dendrites function to:
A. Send signals
B. Receive signals ✅
C. Insulate neurons
D. Produce neurotransmitters
Rationale: Dendrites receive incoming signals.



103. Axons:
A. Receive signals
B. Transmit signals away from cell body ✅
C. Store neurotransmitters
D. Protect neurons
Rationale: Axons carry impulses outward.



104. Myelin sheath:
A. Slows conduction
B. Speeds conduction ✅
C. Stops impulses
D. Produces signals
Rationale: Insulates axons and increases speed.

, 105. Nodes of Ranvier allow:
A. Continuous conduction
B. Saltatory conduction ✅
C. Slow diffusion
D. Chemical signaling
Rationale: Impulses “jump” between nodes.



106. Resting membrane potential is about:
A. +70 mV
B. -70 mV ✅
C. 0 mV
D. +30 mV
Rationale: Typical resting state of neurons.



107. Depolarization involves:
A. K⁺ leaving
B. Na⁺ entering ✅
C. Cl⁻ entering
D. Ca²⁺ leaving
Rationale: Sodium influx reduces negativity.



108. Repolarization involves:
A. Na⁺ entering
B. K⁺ leaving ✅
C. Ca²⁺ entering
D. Cl⁻ leaving
Rationale: Potassium exits to restore charge.



109. Synaptic transmission is primarily:
A. Electrical
B. Chemical ✅
C. Mechanical
D. Thermal
Rationale: Neurotransmitters cross synapse.



110. Neurotransmitters are released from:
A. Dendrites