Developing sperm cells begin the process of meiosis they
This page has been archived and is no longer updated. Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm.
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The male reproductive system is a series of organs and glands that produce sperm, fluids, hormones, and enable the ejaculation of sperm. The reproductive tissues of male and female humans develop similarly in utero until a low level of the hormone testosterone is released from male gonads. Testosterone causes the undeveloped tissues to differentiate into male sexual organs. Primitive gonads become testes; other tissues produce a penis and scrotum in males. In the male reproductive system, the scrotum houses the testicles or testes, providing passage for blood vessels, nerves, and muscles related to testicular function.
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The male gonads, testes or testicles, begin their development high in the abdominal cavity , near the kidneys. During the last two months before birth, or shortly after birth, they descend through the inguinal canal into the scrotum , a pouch that extends below the abdomen , posterior to the penis. This lower temperature is necessary for the production of viable sperm.
Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. This process starts with the mitotic division of the stem cells located close to the basement membrane of the tubules. The mitotic division of these produces two types of cells.
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