Why is it that sperm is solely responsible for determining?
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Sperm is the male gamete, that is, the male sex cell, or the cell in males which has the capacity to fertilise an egg (i.e. a female gamete, also known as an ovum or oocyte). Sperm are produced in the seminiferous tubes of the testes.
The pituitary gland at the base of the brain causes testosterone to be produced in the testes. Testerosterone causes sperms to be produced. The sperm production cycle takes approximately three months and a healthy man produces millions of new sperm each day.
Sperm are not visible to the human eye, however when viewed under a microscope they look a bit like tadpoles because they have a round head section and a long tail. The head of a sperm contains it nucleus, within which 23 chromosomes (i.e. tiny rod like structures which contain genetic information called DNA) are housed. The tail structure enables the sperm to move actively once it leaves the testicles. It helps propel sperm forward from the vagina (when sperm are expelled during sexual intercourse) toward the uterus in search of an oocyte in the fallopian tubes. The tail also provides the necessary motion for the sperm to bind to and penetrate an egg once it has been reached.
In order to fertilise an egg and create an embryo, sperm must leave the testes and come into contact with a mature oocyte (i.e. an oocyte which is ready for fertilisation). Oocytes mature within ovarian follicles in a woman’s ovaries. Typically a single ovarian follicle will prepare an oocyte for release during each ovulatory cycle, and thus, a single mature oocyte will be released each time a woman ovulates. The oocyte is released from the follicle where it has matured, then leaves the ovaries and travels to the uterus via the fallopian tubes, usually every 28 days. For fertilisation to occur, sperm must enter the fallopian tubes while the mature oocyte is also there (i.e. just after the oocyte has been released from its follicle
The pituitary gland at the base of the brain causes testosterone to be produced in the testes. Testerosterone causes sperms to be produced. The sperm production cycle takes approximately three months and a healthy man produces millions of new sperm each day.
Sperm are not visible to the human eye, however when viewed under a microscope they look a bit like tadpoles because they have a round head section and a long tail. The head of a sperm contains it nucleus, within which 23 chromosomes (i.e. tiny rod like structures which contain genetic information called DNA) are housed. The tail structure enables the sperm to move actively once it leaves the testicles. It helps propel sperm forward from the vagina (when sperm are expelled during sexual intercourse) toward the uterus in search of an oocyte in the fallopian tubes. The tail also provides the necessary motion for the sperm to bind to and penetrate an egg once it has been reached.
In order to fertilise an egg and create an embryo, sperm must leave the testes and come into contact with a mature oocyte (i.e. an oocyte which is ready for fertilisation). Oocytes mature within ovarian follicles in a woman’s ovaries. Typically a single ovarian follicle will prepare an oocyte for release during each ovulatory cycle, and thus, a single mature oocyte will be released each time a woman ovulates. The oocyte is released from the follicle where it has matured, then leaves the ovaries and travels to the uterus via the fallopian tubes, usually every 28 days. For fertilisation to occur, sperm must enter the fallopian tubes while the mature oocyte is also there (i.e. just after the oocyte has been released from its follicle
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Low sperm count means that the fluid (semen) you ejaculate during an orgasm contains fewer sperm than normal.
A low sperm count is also called oligospermia . A complete absence of sperm is called azoospermia. Your sperm count is considered lower than normal if you have fewer than 15 million sperm per milliliter of semen.
A low sperm count is also called oligospermia . A complete absence of sperm is called azoospermia. Your sperm count is considered lower than normal if you have fewer than 15 million sperm per milliliter of semen.
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