What ion is necessary to cause the release of neurotransmitters from the synaptic vesicles?

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Autonomic Nervous System NCLEX Questions Questions

Question 1 of 5

What ion is necessary to cause the release of neurotransmitters from the synaptic vesicles?

Correct Answer: B

Rationale: Calcium (Ca2+) influx into the axon terminal triggers neurotransmitter release from synaptic vesicles.

Question 2 of 5

A ridge or bump of the cerebral cortex is called a

Correct Answer: B

Rationale: A gyrus is a ridge on the cerebral cortex. Fissures and sulci are grooves, and the insula is a hidden lobe.

Question 3 of 5

What cerebral area is important for muscular control of speech?

Correct Answer: A

Rationale: Broca’s area (frontal lobe) controls the motor aspects of speech production. Wernicke’s is for comprehension.

Question 4 of 5

Which of the following is NOT a component of the brainstem?

Correct Answer: A

Rationale: The brainstem includes midbrain, pons, and medulla oblongata. The diencephalon (thalamus, hypothalamus) is above the brainstem.

Question 5 of 5

Which of the following cranial nerves does NOT help control eye movement?

Correct Answer: A

Rationale: The optic nerve (CN II) is sensory (vision), not motor. Oculomotor (III), abducens (VI), and trochlear (IV) control eye muscles.

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