Chapter 2 – Sexual Anatomy
In your text, review the 4 main reasons to study sexual anatomy – starts on p. 34.
for most of human history, sexual anatomy has been seen as
shameful, and not a proper topic for discussion or research.
Because of this attitude, mistaken
and sometimes baffling ideas about sexual anatomy have been accepted.
Your text lists some of
these mistaken assumptions.
Which one do you find most interesting, and why?
assumption I found most interesting is that people used to think sperm came from male brains. I
think its interesting because reproductive organs are no where near the brain and it doesn’t make
The Male Sexual Body
is the male organ used in sexual intercourse, as well as a conduit for
urine. The human penis contains neither bones nor muscle, although there are muscles that
control urination and ejaculation at the base of the penis. Instead, the penis contains three
cylinders of spongy erectile tissue, which fill up with blood and stiffen during sexual arousal.
are the larger two of the cylinders. These fill up
with blood and stiffen during sexual arousal.
is the cylinder that runs along the bottom surface
of the penis. It contains the
– the tube that goes from the bladder
to urethral opening. It carries urine out of women and men and sperm for men.
, or head, of the penis is extremely sensitive to sexual
stimulation. It is separated from the body of the penis by the
, AKA the
– a layer of skin that covers the glans of the
A secretion called
may accumulate below the foreskin,
allowing bacteria to flourish.
Smegma normally provides lubrication between the
foreskin and the glans.
– removal of the outer skin of a penis
Reasons for circumcision include religious rites, prevention of
transmission of sexually transmitted infections, a reduced risk of urinary tract