If you want to stop a neuron from receiving input from another source, you would block which portion of the neuron?
axon
dendrite
synapse
synaptic cleft
The Correct Answer is B
A. axon
The axon transmits signals away from the neuron’s cell body toward other cells. Blocking it would prevent output, not input.
B. dendrite
Dendrites receive input from other neurons. Blocking dendrites would prevent the neuron from receiving synaptic signals.
C. synapse
The synapse is the junction between neurons. While blocking the synapse can prevent transmission, the question specifies receiving input, which happens at the dendrites.
D. synaptic cleft
This is the small gap between neurons where neurotransmitters are released. Blocking it affects signal transmission but not specifically the receiving end, which is the dendrite.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. the sweat glands released their product, causing the hair to grow
Hair does not grow postmortem, and sweat gland activity ceases after death.
B. the skin retracted from the hair follicles
After death, the skin dehydrates and shrinks, which can cause the hair shaft to appear longer, giving the illusion that hair has grown, even though it hasn't.
C. during the process of decomposition, the hairs grew out of the follicles
Hair cannot grow after death because cellular metabolism and mitosis cease.
D. the skin grew out, forcing the hair out of the follicles
Skin does not grow postmortem; this is scientifically inaccurate.
Correct Answer is D
Explanation
A. arrector pili muscles; skeletal
Arrector pili muscles are not voluntary, and skeletal muscle is under voluntary control.
B. apocrine pili muscles; smooth
“Apocrine pili” is not a valid term. Apocrine glands are sweat glands, not muscles.
C. arrector pili muscles; cardiac
Cardiac muscle is found only in the heart and is not associated with skin or hair.
D. arrector pili muscles; smooth
These small involuntary muscles are attached to hair follicles and made of smooth muscle, which contracts to produce goosebumps (piloerection) in response to cold or emotional stimuli.
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