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Calcitonin and parathyroid hormone (PTH):

crease blood levels of calcium

Are both secreted by the parathyroid gland

Decrease blood levels of calcium

Control blood levels of calcium

Answer and Explanation

The Correct Answer is D

A. Increase blood calcium: PTH increases it; calcitonin decreases it.

B. Both secreted by parathyroid gland: PTH is from parathyroid, calcitonin from thyroid.

C. Decrease blood calcium: Only calcitonin does; PTH increases calcium.

D. Control blood levels of calcium: Together they regulate calcium homeostasis.

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Correct Answer is C

Explanation

A. Low blood volume:
This stimulates ADH and aldosterone, not insulin.

B. Low blood levels of calcium:
This stimulates parathyroid hormone (PTH), not insulin.

C. High blood levels of glucose:
Insulin is secreted by the pancreas in response to elevated blood glucose to facilitate cellular uptake of glucose.

D. High blood levels of potassium:
Though insulin helps drive potassium into cells, its release is primarily stimulated by glucose.

A. Fasting blood glucose155 mg/dL B. 2-hr blood glucose 132mg/dL C. Casual blood glucose 178 mg/dL D. HbA1c 5.2%

Correct Answer is A

Explanation

A. Fasting blood glucose 155 mg/dL: A fasting glucose level ≥126 mg/dL indicates diabetes. This value is above that threshold.

B. 2-hr blood glucose 132 mg/dL: This is below the diabetic threshold (≥200 mg/dL at 2 hrs) but may indicate impaired glucose tolerance.

C. Casual blood glucose 178 mg/dL: For a random (casual) glucose test, ≥200 mg/dL is diagnostic for diabetes.

D. HbA1c 5.2%: This is within the normal range (below 5.7%).

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Calcitonin and parathyroid hormone (PTH):

Nursing Test Bank

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What is the stimulus for the release of insulin?

Correct Answer is C

Explanation

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Correct Answer is A

Explanation

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