Case 2A - Spermcell production

5 important questions on Case 2A - Spermcell production

Where are the testes located in most animals and why?

The testes are located outside the boy in the scrotum, this is because the spermatogenesis can only occur at temperatures lower than the body temperature.

What is continuous spermatogenesis?

Continuous spermatogenesis means that the producton of sperm is continuous. Spermatogenesis is usually higher during breeding season than outside the reproductive season.

What influences spermatogenesis?

  • Temperature
  • Daylength
  • Seasons

Seasonal variation in production and quality are present
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How many spermcells are used for artificial insemination?

For artificial insemination they use the minimum number of sperm cells needed to achieve a maximum fertilisation result.

How many sperm cells are needed for fertilisation?

Fertilisation itself involves only one sperm cell, but many more are needed to achieve maximum fertilisation. But the amount ejactulated into the female production tract is many times larger than the number needed for maxium fertilisation.

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