Which Of The Following Describes The Makeup Of Semen

Overview

Male Reproductive Anatomy

What's the male reproductive system?

The male reproductive system includes a grouping of organs that make upward a homo's reproductive and urinary system. These organs do the post-obit jobs inside your trunk:

• They produce, maintain and transport sperm (the male person reproductive cells) and semen (the protective fluid around sperm).
• They belch sperm into the female reproductive tract.
• They produce and secrete male sex hormones.

The male reproductive organisation is made up of internal (within your body) and external (outside your body) parts. Together, these organs assist you urinate (rid your body of liquid waste materials), have sexual intercourse and make children.

Role

How does the male person reproductive arrangement office?

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

FSH and LH are produced by the pituitary gland. It's located at the base of operations of your encephalon and it's responsible for many functions in your body. FSH is necessary for sperm product (spermatogenesis). LH stimulates the production of testosterone, which is necessary to go along the procedure of spermatogenesis. Testosterone is as well of import in the development of male characteristics, including muscle mass and strength, fat distribution, bone mass and sexual activity bulldoze.

Anatomy

What are the external male person reproductive structures?

Most of the male person reproductive system is located exterior of your intestinal crenel or pelvis. The external parts of the male reproductive system include the penis, the scrotum and the testicles.

Penis

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

• The root: This is the office of the penis that attaches to the wall of your abdomen.
• The body or shaft: Shaped like a tube or cylinder, the body of the penis is made up of three internal chambers. Inside these chambers in that location'southward a special, sponge-like erectile tissue that contains thousands of big spaces that fill up with blood when y'all're sexually aroused. As the penis fills with blood, it becomes rigid and erect, which allows for penetration during sex. The peel 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 besides chosen the head of the penis, is covered with a loose layer of skin called foreskin. This skin is sometimes removed in a procedure chosen 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 also contains many sensitive nervus 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 menses 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), too every bit many nerves and claret vessels. The scrotum protects your testes, too as providing a sort of climate control system. For normal sperm evolution, the testes must exist at a temperature slightly cooler 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 body for warmth and protection or farther away from the body to cool the temperature.

Testicles (testes)

The testes are oval organs about the size of very big olives that lie in the scrotum, secured at either terminate by a structure called the spermatic cord. Most men accept two testes. The testes are responsible for making testosterone, the primary male sexual activity 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. It carries and stores sperm cells that are created in the testes. It's also the job of the epididymis to bring the sperm to maturity — the sperm that emerge from the testes are immature and incapable of fertilization. During sexual arousal, contractions strength the sperm into the vas deferens.

What are the internal male reproductive organs?

You have several internal organs — also called accompaniment organs — that play a big 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 cavity, to merely behind the bladder. The vas deferens transports mature sperm to the urethra in preparation for ejaculation.
• Ejaculatory ducts: These ducts are formed past 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 float to outside of your body. In males, it has the boosted role of expelling (ejaculating) semen when you reach orgasm. When the penis is erect during sex, the catamenia of urine is blocked from the urethra, allowing just semen to be ejaculated at orgasm.
• Seminal vesicles: The seminal vesicles are sac-similar pouches that attach to the vas deferens near the base of operations 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 motility (motility). The fluid of the seminal vesicles makes upwardly most of the volume of your ejaculatory fluid, or ejaculate.
• Prostate gland: The prostate gland is a walnut-sized structure that'due south located below the urinary bladder in front of the rectum. The prostate gland contributes additional fluid to the ejaculate. Prostate fluids likewise help to nourish the sperm. The urethra, which carries the ejaculate to be expelled during orgasm, runs through the heart of the prostate gland.
• Bulbourethral glands: The bulbourethral glands, or Cowper's 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 any acerbity that may exist present due to balance drops of urine in the urethra.

Conditions and Disorders

Tin a man become through menopause?

Menopause is a term used to draw the end of a woman's normal menstrual role. In women, this is marked by changes in hormone production. One of the biggest changes for a adult female after menopause is that she can no longer take children. The testes, unlike the ovaries, don't lose the ability to brand hormones. If a man is salubrious, he may be able to make sperm well into his 80s or longer.

On the other mitt, subtle changes in the part of the testes tin happen as early on as 45 to fifty years of age, and more dramatically after the historic period of 70. For many men, hormone production may remain normal into old age, while others may have declining hormone production earlier on. This can sometimes exist a result of an illness, such as diabetes.

Information technology's unclear whether decreasing testicular function contributes to symptoms similar fatigue, weakness, depression or impotence.

Care

Tin can "male menopause" be treated?

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

You should receive a complete physical examination and laboratory tests should be performed earlier starting hormone replacement therapy. There are however many unanswered questions about how many middle-aged men could benefit from hormone replacement therapy. Talk to your healthcare provider near all the pros and cons of this handling and what the all-time option is for you.

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

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