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Sexual and Reproductive Problems |
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Medical Articles -
Sexual Health
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Wednesday, 16 January 2008 |
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A man's reproductive organs are responsible for producing the male sex hormone testosterone, and for the manufacture and storage of sperm. The organs are regularly outside the body and consist of the penis and the testes or testicles.
The penis is chiefly made up of 3 groups of spongy tissue, with a network of blood vessels and nerves. When a man is sexually stimulated the spongy tissue fills with blood and the penis becomes erect. The average length of an erect penis is 6in/15cm, although its size bears no relation to sexual potency. A cylinder running along the underside of the penis holds a muscular dual-purpose tube called the urethra, which carries urine from the bladder or semen from the testes to the tip of the penis.
The testicles are egg shaped glands supported by the scrotum, a loose sac of skin. Inside each testicle are hundreds of tubules, and it is in these that the manufacture of sperm takes place. Hundreds of millions of sperm are assembled every day. The testicles also contain cells which manufacture testosterone, the hormone responsible for male characteristics like body hair and deep voice, and for male pattern fat distribution.
Attached to the back of each testicle is the epididymis, a comma-shaped structure 1in/2.5cm long, consisting of a cluster of small tubules that collect sperm from the testicles. The sperm mature within the epididymis over 2 to 3 weeks, and are stored there until they are ready to be ejaculated. Just before ejaculation, sperm are transported from the epididymis, through a long duct called the vas deferens, toward the base of the bladder. The prostate, a little chest nut-shaped gland that is situated at the base of the bladder and surrounds the urethra, assembles secretions that mix with seminal fluid.
Erections are controlled by nerve centers in the brain that react to erotic stimulation. What is sexually stimulating differs from man to man. Expectations and confidence also playa large part: in a greatly competitive society, many men have unrealistic sexual expectations and equate sexual performance and penis size with success. Stress and anxiety about performance are general reasons for impotence.Article Source: http://www.myarticlemall.com Read out for Strength ball training. Check out arthritis and diagnostic tests
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Latest news in this category:
Male bisexuality Wednesday, 17 December 2008Men's Health News The landmark "Sexual Behavior in the Human Male" report revealed major insights into bisexual behavior and orientation -- without even using the word "bisexual" -- when it was published 60 years ago by pioneering sex researcher Alfred Kinsey and his research team at Indiana...
Women have more sexual partners than men in Britian Monday, 15 December 2008Women's Health News The results of a recent survey in Britain have led to announcements that Brits, in particular young female ones, are amongst the most promiscuous in the world.
Warning on heavy toilet seats and toddler penis injuries Friday, 12 December 2008Child Health News UK doctors have expressed considerable concerns about the growing trend for heavy wooden and ornamental toilet seats after many male toddlers were admitted with crush injuries to their penises.
Contraceptive methods and women's sexuality Tuesday, 09 December 2008Women's Health News New data from The Kinsey Institute at Indiana University demonstrate that many women think condoms undermine sexual pleasure, but those who use both hormonal contraception and condoms report higher overall sexual satisfaction.
Trends in sexual risk behaviors, by nonsexual risk behavior involvement, U.S. high school students Wednesday, 26 November 2008Medical Research News Although teens who engage in risky health behaviors like smoking and drunk driving are likelier to participate in sexual activity than more cautious peers, interventions aimed at reducing sexual activity appear to be similarly effective in high-risk and low-risk teens, a new...
Anal sex being practiced by more teens Thursday, 20 November 2008Medical Research News A new study by researchers at the Bradley Hasbro Children's Research Center suggests that the incidence of heterosexual anal sex is increasing among teens and young adults - specifically those who have lately had unprotected vaginal sex.
Sexuality and nursing home residents Wednesday, 19 November 2008Healthcare News They are also a way to give nursing home residents some privacy for sexual expression, according to Kansas State University aging experts."By rule you can't always lock a room, but you can offer residents some privacy," said Gayle Doll, who directs K-State's Center on Aging.
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Popular articles |
Sexual and Reproductive Problems
Wednesday, 16 January 2008
A man's reproductive organs are responsible for producing the male sex hormone testosterone, and for the manufacture and storage of sperm. The organs are regularly outside the body and consist of the penis and the testes or testicles. |
Bisexual women - new research findings
Friday, 18 January 2008
Bisexuality in women appears to be a distinctive sexual orientation and not an experimental or transitional stage that some women adopt "on their way" to lesbianism, according to new research published by the American Psychological Association. |
Men's pride in sexual performance may help the fight against obesity
Wednesday, 12 March 2008
Men's pride in sexual performance may help the fight against increasing fatness, according to internationally regarded expert on fatness, men's health and ageing Professor Gary Wittert. |
One in 4 Teen Girls Has a Sexually Transmitted Disease
Wednesday, 12 March 2008
TUESDAY, March 11 More than 3 million teenaged girls have at least one sexually transmitted disease (STD), a new government study suggests. The most severely affected are African-American teens. |
FDA says meat and milk from animal clones safe to eat as food from conventionally bred animals
Wednesday, 16 January 2008
After years of detailed study and study, the Food and Drug Administration has concluded that meat and milk from clones of cattle, swine, and goats, and the offspring of clones from any species traditionally consumed as food, are as safe to eat as food from conventionally bred animals. |
FDA approves Cialis (tadalafil) for U.S
Wednesday, 09 January 2008
Eli Lilly and Company has announced that the U.S. Food and Drug Administration (FDA) has permitted Cialis (tadalafil) for once daily use (2.5 mg and 5 mg), an oral medication taken once per day to treat erectile dysfunction (ED). |
Chlamydia trachomatis genome sheds light on an emerging infection
Monday, 07 January 2008
Researchers have decoded the genome of the strain of Chlamydia that causes the most severe, invasive form of the disease. Their study shows that, in spite of recent increases in invasive infections, the strain has remained virtually unchanged for 40 years. |
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