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Semen Analysis (Sperm Count)
Semen Analysis (Sperm Count)78523
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MEDICAL ANIMATION TRANSCRIPT: A semen analysis is a test done on men to measure the amount and quality of their reproductive fluid called semen and their reproductive cells called sperm. A man's reproductive system includes two glands called testicles or testes. They're located inside a pouch of skin called the scrotum. The scrotum is outside the body which keeps the testicles cool enough to make sperm. Connected to each testicle is a mass of coiled tubes called the epididymis. Each epididymis stores immature sperm while they continue to develop. During sex, sperm travel through a tube attached to the epididymis called the vas deferens to another tube called the ejaculatory duct. There, sperm mix with fluid from two glands called seminal vesicles, as well as the prostate gland. Now called semen, this fluid mixture exits the body through the urethra, the tube inside the penis, that usually carries urine. During sex with a woman, this process called ejaculation, deposit semen in her vagina. Semen contains tens of millions of sperm. From the vagina, sperm can pass through the cervix, uterus, and fallopian tubes to fertilize an egg from the woman's body. Fertilization of the egg marks the beginning of human development during pregnancy. A man's doctor may recommend a semen analysis if he is unable to get a woman pregnant after at least a year of unprotected sex, or after six months if she's over 40, or if he's had a birth control procedure called of a vasectomy. The test may be done to make sure there are no sperm in the semen. For semen analysis, men need to provide a semen sample after not ejaculate for two to five days. Usually men collect semen in a sterile cup or jar after stimulating themselves to ejaculation, called masturbating, or a doctor may provide a special condom to collect the semen at home during sex. It's important to collect all of the ejaculate semen. Samples collected at home should be kept at body temperature and returned to the lab within two hours for reliable results. In the lab, the person testing the semen will look at the total amount or volume of the semen sample. The normal volume range is 1.5 to 5 milliliters or about a third of a teaspoon to one teaspoon. If the semen volume is too low, it may not have enough sperm or enough fluid to nourish and help transport the sperm to a woman's egg. The lab will also look at the thickness of the semen. If the semen is too thick, the sperm will be trapped within it. Next, three main tests will be done on the semen sample under a microscope. First, a test called a sperm count will measure the number of sperm per milliliter of semen. If the sperm count is low, it decreases the chances of getting a woman pregnant. Second, a motility test will look at the way the sperm move or swim. If the sperm have poor motility, they swim to slowly, don't swim properly, or don't move at all. With poor motility, the sperm may not be able to swim toward a woman's egg to fertilize it. Third, a morphology test will look at the shape of the sperm. Sperm with abnormal morphology may have a shape that causes pour motility, or the sperm may not be able to fertilize an egg even if they reach it.

ANH14124 04:11

Last Updated: Mar 12th, 2021

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