During transmission across a typical chemical synapse,

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Neurological System Questions Questions

Question 1 of 5

During transmission across a typical chemical synapse,

A. neurotransmitter molecules are stored in the synaptic cleft. B. action potentials trigger chemical changes that make the synaptic vesicles fuse with each other. C. vesicles containing neurotransmitter diffuse to the receiving cell's plasma membrane. D. neurotransmitter molecules bind to receptors in the receiving cell's plasma membrane.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

You start to fall but then catch yourself, regaining your balance. Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?

A. motor cortex B. thalamus C. cerebellum D. pons

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

Which of the following statements about Alzheimer's disease is true?

A. Alzheimer's disease is suspected if a patient cannot retain his or her balance. B. Alzheimer's disease is age-related, increasing in frequency as people age. C. Alzheimer's disease often reverses or improves with time. D. Alzheimer's disease frequently involves positive changes in personality.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

The peripheral nervous system consists of:

A. spinal nerves only B. the brain only C. the spinal and cranial nerves D. the brain and spinal cord

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

Which one of the following describes saltatory conduction:

A. occurs only if the myelin sheath is continuous B. occurs only if the nodes of Ranvier are lacking C. occurs only in the absence of axon hillocks D. is faster than conduction on an unmyelinated fiber

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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