Which of the following is NOT a function of epinephrine?

The correct answer, which indicates that communication with stem cells in bone marrow is NOT a function of epinephrine, is accurate because epinephrine primarily serves as a hormone and neurotransmitter involved in the body’s fight-or-flight response. Its main functions include increasing heart rate, boosting metabolic rate, and causing vasoconstriction in certain areas such as the skin.

Epinephrine achieves these effects by acting on adrenergic receptors throughout the body, leading to enhanced cardiac output, increased blood glucose levels, and improved blood flow to essential organs and muscles during stress. This ensures that the body is primed for quick action.

In contrast, epinephrine does not play a direct role in communication with stem cells in the bone marrow, which is more relevant to processes like hematopoiesis, immune function, and tissue repair. Stem cell communication typically involves other cytokines and growth factors that specifically target and regulate those processes.