I sperm at the onset of puberty which will

            

I am sure at one point in your life you said you wanted kids
in the future or maybe even just thought about it, but do you know how it all
really happens or the role you play as a male? In this essay, I will list all
of the structures of the male reproductive system such as the Testes,
epididymis, urethra, Vas deferens, prostate gland seminal vesicle, urinary
bladder, and finally the penis. I will also explain the function of each one.

The reproductive system of a male is
a set of organs that works together to make and move sperm that will soon be
used to fertilize eggs. Guys start producing sperm at the onset of puberty
which will start at different times for different people, the typical age is
around ten –twelve years old. Once puberty is complete, the testicles will
produce millions of sperm a day. During puberty, a hormone called gonadotrophin
releasing hormone (GnRH) increases, it is produced in a part of the brain
called the hypothalamus. This causes an increase in the production of two
hormones called luteinizing hormone (LH) and follicle stimulating hormone (FSH).
Many Woman would argue that they are the most important part when it comes to
making a baby since they hold it in their stomach and carry the eggs, but men
can also argue that they are in fact the most important because they create the
sperm that goes into the egg in the first place. Studies have shown, that they
are both equally needed the same amount for anything to happen. Even though
they are both coming together to make one final end product (A baby) they both
have different tasks in the very long process, they also have different structures
that help make it happen, both sexes in humans have a set of gonads.

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 The most important part of the reproductive system
for a male is the testes or also known as testicles which are oval-shaped
organs that are in a sac called the scrotum behind the penis, they are most
important because that is where sperm cells, and testosterone are created due
to the hormones that were already made in the brain. The testicles also produce
hormones which help men develop some characteristics associated with being a
man including: the hair distribution, Enlargement of the penis, deepening of
the voice, muscle growth, bone growth, and increased height. Each sperm cell
takes between 65-75 days to form and roughly around 250 million are produced
every day, a male is able to still have kid even if he only has one testicle
instead of two. The testes are held together as a pair in the scrotum, A
scrotum is known as a loose sac of skin that will protect the testes and can be
thought as “The Temperature Controller”, because each teste must be cooler than
the rest of the body for normal sperm production. Since they need to be cooler,
the scrotum has muscles in it that will allow it to tighten or relax, for
example it will move the testes closer to the body for warmth or away from the
body to cool down. Let’s just say the scrotum didn’t move at all and it was
constantly pressed against the body, our own body heat will kill the sperm
cells that have been made, or it might prevent sperm cells from being made in
the first place.

  Each
teste has diploid cells called spermatogonia which are derived from embryonic
germ cells. Spermatogonia are stem cells that divide by mitosis to ensure a
continuous supply of Spermatogonia is always available. Sperm is then made and
stored in the epididymis.

The epididymis is a long and coiled
tube that collects sperm from the testes and also provides a good environment
for the sperm, where it can mature and gain the ability to move on its own
through the female reproductive system also be able to fertilize an egg. This
is very similar to the seminal vesicles, which is a vesicle that secrets a
thick fluid that contains mucus and the sugar fructose, which will provide most
of the energy used by the sperm as they propel themselves through the female
reproductive system.

The epididymis can be divided into
three major parts: the head, the body, and the tail.  It is also known to be two tight and thin coiled
tubes that carry sperm from the testes into the Vas deference. The Vas
Deference connects the epididymis to the ejaculatory duct. During the process
of ejaculation, the walls of the vas deference thickens and propels the sperm
into the urethra which is a tube that carries out sperm and urine from the
body. Before the sperm leaves the body, it is filtered to make sure no urine is
present, if urine is left in it will kill the sperm since it is acidic. Sperm
can only last for about 30 seconds outside the body after ejaculation, that’s
if it does not go into the female right away, if the sperm did enter the vagina
it can last up to seven days long. Next you have the prostate gland which is
shaped like a walnut. It will grow throughout a man’s life, its main function
is to secrete prostate fluid which is one of the components in your semen, the
muscles of the prostate gland also help’s push the semen along.  It Is located inferior to the bladder in the
pelvic cavity. The prostate contains an ejaculatory duct. The muscles of the
prostate gland also help propel the semen into the urethra during ejaculation,
the prostate gland is also similar to the Bulbourethral gland also known as the
cowper’s gland, which produces thick clear mucus before ejaculation (pre-cum), Now
all we have left is the penis. The penis is the male sex organ, that reaches
its full growth size when a boy is going through puberty. When you become
sexually aroused, a number of changes occur inside the penis. The arteries that
supply the penis gets bigger, allowing more blood flow to enter the tissues. The
more blood flow that occurs causes the penis to enlarge and become more rigid. The
blood flow plus signals from the nervous system and chemical changes causes an
erection. Ejaculation is known for the contractions that release semen. That is
a reflex action, which means it in not consciously controlled. As part of this
reflex action, the opening that empty’s the bladder is closed so no urine is released
the same time as the semen. The volume of sperm in a typical ejaculation is
between 2.5-5 milliliters. That is more than 20 million sperm in each mL of
semen. During intercourse, the penis enters the female’s vagina, carrying the
sperm to the neck of the cervix to fertilise a woman’s egg.

Women’s menstrual cycle lengths can
vary but the most common cycle length is somewhere between 23 and 35-day cycle
which is the result of the release of a mature egg from the ovary. The egg
might go on to become fertilized or may be released, unfertilized, along the
lining of the uterus. The latter might take place with monthly bleeding called
menstruation. The delicate cycle results from a complicated interaction among
several interactions with several hormones such as, Follicle-Stimulating
Hormone (FSH), Estrogen, Luteinizing Hormone (LH), and Progesterone.

Follicle-Stimulating Hormone (FSH) stimulates
the development of new follicles as well as the production of the hormone estrogen.
During this phase which is known as the follicular phase, an increase in FSH
occurs. This increases the growth and development of new follicles, which will
develop into the ovulated egg.

Estrogen is responsible for the
continuing development of follicles within the ovaries, but the effects of
estrogen are not limited to within the ovaries. Within the uterus, the rising
levels of this hormone in thickening the endometrium (a layer of the uterus). This
also causes the mucus within the cervix to become thicker. Finally estrogen acts
as a suppressor if its own release called a negative feedback loop. It also suppress
the production of LH just before ovulation.

Luteinizing Hormone (LH) peaks in the
middle of the 28-day cycle. It is typically known as the LH surge and gives the
signal that ovulation is about to occur. Since the peak of LH releases,
concentration of this hormone becomes nine times more-higher than usual. Ovulation
mostly occurs within the 10 hours of the LH surge.