Male secondary sex characteristics:
<P>
   The testes synthesize androgens, such as testosterone, which stimulate
   the male reproductive system and yield secondary sex characteristics:
<P>
<BR><LI> facial, abdominal and chest hair
<BR><LI> prominent Adam's apple (larynx) and deep voice
<BR><LI> greater muscle mass and physical strength
<BR><LI> larger hands and feet
<LI> fat deposits mainly around the abdomen and waist (apple shape)