Video Transcript
The diagram shows an outline of the
male reproductive system. What number indicates the sperm
duct, vas deferens?
This question is asking us about
the male reproductive system. One of the roles of this system is
to deliver semen, which contains sperm, to the female reproductive system using the
penis. A sperm cell can then combine with
an egg cell that’s produced by the female reproductive system to make a fertilized
egg. This fertilized egg can then go on
to make a baby, which can develop in the female reproductive system.
To answer our question and see
where the sperm duct, or vas deferens, is, let’s go through this provided diagram
and discuss how sperm can be released through the penis.
Sperm is produced in the testes, or
testis as singular. These are sometimes called the
testicles. Sperm are sensitive to high
temperatures, so the testes are kept outside the body in a sac of skin called the
scrotum. The sperm that are made in the
testes are stored in the epididymis. When the male is sexually aroused,
the sperm can travel from the epididymis through a tube called the sperm duct, or
vas deferens. The sperm can then mix with fluids
from different glands to form semen. One of these glands is called the
seminal vesicle. Another gland that adds fluid to
make semen is the prostate gland.
Now that semen is prepared, it can
be ejaculated, or ejected, from a tube called the urethra. During sexual intercourse, the
ejaculated semen can enter the female reproductive system, where a sperm cell in the
semen can fertilize an egg cell.
The last number in this diagram
indicates the bladder. The urethra is also the tube that
is used to expel urine from the bladder. Getting back to our question, the
number that indicates the sperm duct, or vas deferens, is number 1.
