Testosterone

Definition

Testosterone is a hormone that plays a key role in male sexual development and function. It's also involved in building muscle mass, bone density, and influencing behavior.

Related terms

Androgens: These are a group of hormones that play a role in male traits and reproductive activity. Testosterone is the most well-known androgen.

Endocrine System:

This system includes all the glands in your body that produce hormones like testosterone.

Secondary Sexual Characteristics: These are features that distinguish males from females but aren't directly part of the reproductive system. For example, facial hair growth stimulated by testosterone is a secondary sexual characteristic.