The half-life of a hormone is

A. half the time until the hormone molecule dissolves.
B. one-half of the time it takes to synthesize the chemical messenger molecule.
C. half of the duration of the hormone's effects on its target cells throughout the body.
D. the time necessary to reduce the hormone concentration in the blood to half of what had been secreted.


Answer: D

Anatomy & Physiology

You might also like to view...

The oral cavity, pharynx, esophagus, and rectum have an adventitia in place of the

A) mucosa. B) lamina propria. C) serosa. D) muscularis externa. E) submucosa.

Anatomy & Physiology

In the process of urine formation, first

A.  filtrate is formed, then tubular fluid, then urine. B.  tubular fluid is formed, then filtrate, then urine.

Anatomy & Physiology

Which of these would you NOT find in the cerebral cortex?

A) fiber tracts B) interneurons C) dendrites D) cell bodies

Anatomy & Physiology

Which of the following is an example of a pivot joint?

A) atlanto-occipital B) sacroiliac C) atlanto-axial D) vertebrocostal E) intervertebral

Anatomy & Physiology