(1) Surrounding the urethra is a central cylinder of erectile tissue called the
corpus spongiosum. This cylinder is bulb-shaped at each end. The posterior end is
attached to the base of the pelvis. The sensitive anterior end is known as the glans.
CORPUS SPONGIOSUM = spongy body
(2) Overlying the corpus spongiosum is a pair of cylinders of erectile tissue
called the corpora cavernosa. These two cylinders are separate in their proximal fourth
and joined in their distal three-fourths. They are attached to the pubic bones. Together,
the corpus spongiosum and the corpora cavernosa combine to form the shaft of the
CORPUS CAVERNOSUM = cavernous body
(3) The prepuce, or foreskin, is a covering of skin for the glans. It may be
removed in a surgical procedure called circumcision.
8-16. SECONDARY SEXUAL CHARACTERISTICS
The secondary sexual characteristics of male include growth of facial, pubic, and
chest hair; growth of the larynx to deepen the voice; and deposition of protein to
increase muscularity and general body size.