Which Of The Following Describes The Makeup Of Semen?

Overview

Male Reproductive Anatomy — Male Reproductive Beefcake

What'southward the male reproductive system?

The male reproductive system includes a group of organs that make upward a human being'due south reproductive and urinary system. These organs do the post-obit jobs within your body:

They produce, maintain and send sperm (the male reproductive cells) and semen (the protective fluid around sperm).
They belch sperm into the female reproductive tract.
They produce and secrete male sexual practice hormones.

The male reproductive system is made upward of internal (inside your body) and external (exterior your body) parts. Together, these organs help yous urinate (rid your body of liquid waste materials), have sexual intercourse and make children.

Function

How does the male reproductive organisation function?

The entire male reproductive system is dependent on hormones. These are chemicals that stimulate or regulate the activity of your cells or organs. The main hormones involved in the performance of the male reproductive system are follicle-stimulating hormone (FSH), luteinizing hormone (LH) and testosterone.

FSH and LH are produced by the pituitary gland. Information technology's located at the base of your encephalon and it's responsible for many functions in your body. FSH is necessary for sperm production (spermatogenesis). LH stimulates the production of testosterone, which is necessary to continue the process of spermatogenesis. Testosterone is as well important in the development of male characteristics, including muscle mass and strength, fat distribution, bone mass and sex drive.

Anatomy

What are the external male reproductive structures?

Most of the male reproductive system is located outside of your abdominal cavity or pelvis. The external parts of the male reproductive system include the penis, the scrotum and the testicles.

Penis

The penis is the male organ for sexual intercourse. It has three parts:

The root: This is the part of the penis that attaches to the wall of your abdomen.
The body or shaft: Shaped like a tube or cylinder, the torso of the penis is made up of iii internal chambers. Inside these chambers there's a special, sponge-similar erectile tissue that contains thousands of large spaces that fill with blood when you're sexually aroused. Every bit the penis fills with claret, it becomes rigid and erect, which allows for penetration during sex. The skin of the penis is loose and rubberband, allowing for changes in penis size during an erection.
The glans: This is the cone-shaped end of the penis. The glans, which is also called the head of the penis, is covered with a loose layer of peel called foreskin. This skin is sometimes removed in a procedure called circumcision.

The opening of the urethra — the tube that transports both semen and urine out of the body — is located at the tip of the glans penis. The penis likewise contains many sensitive nerve endings.

Semen, which contains sperm, is expelled (ejaculated) through the end of the penis when a man reaches sexual climax (orgasm). When the penis is erect, the flow of urine is blocked from the urethra, allowing only semen to exist ejaculated at orgasm.

Scrotum

The scrotum is the loose pouch-similar sac of skin that hangs behind the penis. Information technology holds the testicles (also called testes), besides as many fretfulness and blood vessels. The scrotum protects your testes, as well equally providing a sort of climate control arrangement. For normal sperm evolution, the testes must be at a temperature slightly libation than the body temperature. Special muscles in the wall of the scrotum allow it to contract (tighten) and relax, moving the testicles closer to the torso for warmth and protection or farther away from the torso to absurd the temperature.

Testicles (testes)

The testes are oval organs near the size of very large olives that lie in the scrotum, secured at either end past a structure called the spermatic string. Nearly men take two testes. The testes are responsible for making testosterone, the main male sex hormone, and for producing sperm. Within the testes are coiled masses of tubes chosen seminiferous tubules. These tubules are responsible for producing the sperm cells through a process called spermatogenesis.

Epididymis

The epididymis is a long, coiled tube that rests on the backside of each testicle. Information technology carries and stores sperm cells that are created in the testes. It'due south likewise the job of the epididymis to bring the sperm to maturity — the sperm that emerge from the testes are young and incapable of fertilization. During sexual arousal, contractions strength the sperm into the vas deferens.

What are the internal male reproductive organs?

Yous have several internal organs — besides called accessory organs — that play a large part in the male reproductive system. These organs include:

Vas deferens: The vas deferens is a long, muscular tube that travels from the epididymis into the pelvic crenel, to merely backside the bladder. The vas deferens transports mature sperm to the urethra in preparation for ejaculation.
Ejaculatory ducts: These ducts are formed by the fusion of the vas deferens and the seminal vesicles. The ejaculatory ducts empty into the urethra.
Urethra: The urethra is the tube that carries urine from the bladder to outside of your body. In males, information technology has the additional part of expelling (ejaculating) semen when you reach orgasm. When the penis is erect during sex activity, the flow of urine is blocked from the urethra, assuasive merely semen to exist ejaculated at orgasm.
Seminal vesicles: The seminal vesicles are sac-like pouches that attach to the vas deferens near the base of the bladder. The seminal vesicles make a sugar-rich fluid (fructose) that provides sperm with a source of energy and helps with the sperms' ability to movement (movement). The fluid of the seminal vesicles makes up nigh of the volume of your ejaculatory fluid, or ejaculate.
Prostate gland: The prostate gland is a walnut-sized structure that's located below the urinary bladder in front of the rectum. The prostate gland contributes additional fluid to the ejaculate. Prostate fluids also help to nourish the sperm. The urethra, which carries the ejaculate to be expelled during orgasm, runs through the center of the prostate gland.
Bulbourethral glands: The bulbourethral glands, or Cowper'south glands, are pea-sized structures located on the sides of the urethra, just below the prostate gland. These glands produce a clear, glace fluid that empties directly into the urethra. This fluid serves to lubricate the urethra and to neutralize whatever acidity that may exist present due to residual drops of urine in the urethra.

Atmospheric condition and Disorders

Can a human get through menopause?

Menopause is a term used to describe the cease of a woman's normal menstrual part. In women, this is marked by changes in hormone product. One of the biggest changes for a woman afterwards menopause is that she can no longer have children. The testes, unlike the ovaries, don't lose the ability to brand hormones. If a human being is healthy, he may be able to make sperm well into his 80s or longer.

On the other paw, subtle changes in the function of the testes tin happen as early as 45 to l years of age, and more dramatically after the age of lxx. For many men, hormone production may remain normal into onetime age, while others may accept declining hormone product earlier on. This tin can sometimes exist a result of an illness, such as diabetes.

It's unclear whether decreasing testicular function contributes to symptoms like fatigue, weakness, depression or impotence.

Care

Tin "male person menopause" be treated?

If your testosterone levels are low, hormone replacement therapy may help relieve symptoms, such as the loss of interest in sex, depression and fatigue. Nevertheless, replacing male person hormones can make prostate cancer worse, and may make atherosclerosis (hardening of the arteries) worse, as well.

Yous should receive a consummate concrete exam and laboratory tests should be performed earlier starting hormone replacement therapy. In that location are nonetheless many unanswered questions about how many middle-aged men could benefit from hormone replacement therapy. Talk to your healthcare provider about all the pros and cons of this treatment and what the best selection is for you.

Source: https://my.clevelandclinic.org/health/articles/9117-male-reproductive-system

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