Parathyroid hormone (PTH) is secreted by the parathyroid glands in response to low blood concentration of calcium ions. This mechanism operates by a ________

A) hormonal stimulus
B) humoral stimulus
C) neural stimulus
D) messenger stimulus
E) steroid stimulus


B

Anatomy & Physiology

You might also like to view...

The liver stores Vitamins A, B12, K, and C

Indicate whether the statement is true or false.

Anatomy & Physiology

________ pair(s) of salivary glands secrete into the oral cavity

A) One B) Two C) Three D) Four E) Six to Ten

Anatomy & Physiology

Select the incorrect statement about hemoglobin

a. It combines with oxygen at the lungs. b. It contains iron. c. It forms an irreversible association with oxygen. d. It is located inside the red blood cell. e. Its globin portion is a polypeptide.

Anatomy & Physiology

The ________ cardiac vein travels alongside the right marginal artery.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology