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Calcitonin and parathyroid hormone (PTH):

A.

crease blood levels of calcium

B.

Are both secreted by the parathyroid gland

C.

Decrease blood levels of calcium

D.

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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Related Questions

Correct Answer is D

Explanation

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.

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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