A lab test for a patient showed a low calcium level in the blood. The physician would consider doing further testing on which endocrine gland to evaluate the cause of this?
A) thymus
B) parathyroid
C) adrenal medulla
D) pineal
B
Explanation: A) The hormone secreted by the thymus does not regulate the calcium level of the blood.
B) Correct! Parathyroid gland hormone moves calcium from the bone to the blood to increase the calcium level of the blood.
C) The hormones secreted by the adrenal medulla do not regulate the calcium level of the blood.
D) The hormone secreted by the pineal gland does not regulate the calcium level of the blood.
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