Alzheimer's disease is characterized by the accumu

ATI LPN

ATI LPN Test Bank

Alzheimer's disease is characterized by the accumulation of abnormal protein deposits known as:

A. Amyloid plaques and neurofibrillary tangles B. Lipofuscin granules C. Tau protein aggregates D. Myelin sheath abnormalities

Correct Answer: A

Rationale: Alzheimer’s features amyloid plaques (beta-amyloid) and neurofibrillary tangles (tau). [Level: Knowledge]

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

A. sodium B. calcium C. potassium D. magnesium

Correct Answer: B

Rationale: Calcium influx triggers vesicle exocytosis, releasing neurotransmitters. [Level: Knowledge]

Which of the following is NOT a lobe of the cerebrum?

A. frontal B. parietal C. occipital D. cerebellar

Correct Answer: D

Rationale: Cerebral lobes are frontal, parietal, temporal, occipital; cerebellar is cerebellum. [Level: Knowledge]

Identify the function of the thalamus:

A. sensory relay center B. regulate body temperature C. links the nervous and endocrine systems D. all of the above

Correct Answer: A

Rationale: The thalamus relays sensory signals to the cortex. B/C are hypothalamic roles. [Level: Knowledge]

There are ____ cranial nerves and ___ spinal nerves:

A. 12 pairs; 12 pairs B. 12 pairs; 31 pairs C. 31 pairs; 12 pairs D. 31 pairs; 15 pairs

Correct Answer: B

Rationale: 12 pairs of cranial nerves, 31 pairs of spinal nerves (8C, 12T, 5L, 5S, 1Co). [Level: Knowledge]

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