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Test Questions on Autonomic Nervous System MCAT Questions
Question 1 of 5
A synaptic arrangement in which the synaptic end bulbs of one presynaptic neuron terminate on several postsynaptic neurons.
Correct Answer: B
Rationale: Divergence is when one presynaptic neuron synapses on multiple postsynaptic neurons, amplifying signals. Epinephrine is a hormone, microtubules are structural, and nerve fiber is an axon.
Question 2 of 5
Which of the parts of nervous tissue transmits an action potential?
Correct Answer: A
Rationale: The axon transmits action potentials to other cells. Cell body and dendrites process signals, and neuroglia support but don’t conduct.
Question 3 of 5
The optic (II) nerve emerges from the brain; therefore, it is a type of
Correct Answer: C
Rationale: The optic nerve (CN II) emerges from the brain, making it a cranial nerve, transmitting visual information. Spinal nerves exit the spinal cord, somatic is a functional term, and enteric is digestive.
Question 4 of 5
Which of the following is an effector of the autonomic nervous system?
Correct Answer: D
Rationale: Salivary glands, heart, and pancreas are effectors of the ANS, regulated involuntarily (e.g., salivation, heart rate, insulin release). 'All of these' is correct.
Question 5 of 5
Identify the neural cell or part of a neuron that cannot conduct impulses.
Correct Answer: D
Rationale: Neuroglia support neurons but cannot conduct impulses. Axon, cell body, and dendrites participate in signal conduction.