Video Transcript
The figure shows a side view of the
organs of the male reproductive system. Which label represents the organ
that secretes testosterone?
To work out which of these organs
secretes testosterone, let’s review the different organs that have been labeled in
the diagram and their functions.
The primary function of the male
reproductive system is to produce, store, and release mature sperm cells that would
be capable of fertilizing a biological female’s egg cell. Sperm cells are produced in organs
called the testes. A singular testis has been labeled
on this diagram with the letter E. When the mature sperm cells are
ready to be released, they are transported along a duct called the vas deferens
which has been labeled with the letter A. The letter B is labeling the
prostate gland, and the letter C is labeling one of the two seminal vesicles. These glands secrete fluids to make
up the liquid semen that sperm travels through. Eventually, semen and the sperm
cells within it will typically be released from the biological male’s body through
the penis, which has been labeled with the letter D.
A hormone called testosterone
controls the growth and development of many of these sexual organs and of secondary
sex characteristics that are related to, but not directly involved in,
reproduction. Testosterone, which also plays a
significant role in regulating the process of sperm production, is produced and
secreted by specific cells in the testes.
Now we know the correct answer to
our question. The label that represents the organ
that secretes testosterone is E, the testis.
