Circulating testosterone levels in men begin to decline at approximately age ________ years.

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


50-60

Anatomy & Physiology

You might also like to view...

Infantile hypothyroidism results from

A. lack of prolactin. B. hypothyroidism in an adult. C. hyperthyroidism in an adult. D. a deficiency of thyroid hormones at birth.

Anatomy & Physiology

Before a cell divides, its DNA must be replicated to

A) provide a backup copy of DNA in case the original DNA is damaged during mitosis. B) replace the DNA lost during transcription. C) supply each new cell with a full set of the genetic material. D) replace genetic instructions used by the original cell. E) use as an energy source during cytokinesis.

Anatomy & Physiology

What is the major function of brown adipose tissue?

A. Decrease body temperature B. Shivering thermogenesis C. Decreasing metabolic rate D. Nonshivering thermogenesis

Anatomy & Physiology

Identify the bones that articulate inferiorly with the most inferior of the highlighted bones.

Anatomy & Physiology