T₃,T₄,and Calcitonin Are

Question

T₃,T₄,and calcitonin are
A) secreted by the thyroid gland.
B) secreted by the parathyroid glands.
C) secreted in response to declining plasma levels of calcium.
D) steroids.

Accepted Answer

T₃, T₄, and calcitonin are hormones that are secreted by the thyroid gland. T₃ and T₄ are responsible for regulating metabolism, while calcitonin helps to regulate calcium levels in the body.