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| the period in the development of a human during which he or she becomes sexually mature and able to reproduce |
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| Puberty begins when hormones released from the pituitary gland in the brain stimulate the testes to produce more of the male sex hormone testosterone |
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contains the haploid nucleus with
23 chromosomes. |
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| packed with chemicals that allow the sperm cell to enter the egg |
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| directly behind the head and is packed with mitochondria, which provide the sperm with energy. |
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| called the flagellum and propels the sperm |
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| produce and nourish the developing sperm, and also produce testosterone |
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| The testes are enclosed in a protective sac called scotum |
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| Each testis contains a mass of coiled tubes called seminiferous tubules, which contain diploid cells that undergo meiosis to produce haploid sperm cells |
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| Sitting above each of the testes is the epididymis, where mature sperm are stored |
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| a tube that carries the sperm to the urethra. |
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| part of both the excretory and reproductive systems |
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| the organ that contains the urethra |
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| accessory glands that secrete seminal fluid |
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Definition
| seminal vesicles, prostate gland, and Cowper’s glands |
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Definition
provides sugar for energy, protects the
sperm from the acidic female reproductive tract, and provides the fluid for swimming. |
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| The sperm and the seminal fluid together make up semen |
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It takes from 65 to 75 days for a sperm cell to mature.
can produce 200 to 300 million sperm each day |
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Definition
Sperm cells start out as diploid cells on the inside surface of a seminiferous
tubule |
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Term
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Definition
| they have reached the centre of the tubule. The sperm cells then move to the epididymis, where they finish maturing. |
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Definition
| provide nourishment to the developing sperm. |
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