Cell Part Sperm
This labelled diagram shows the structure of a sperm cell in detail, which has the following parts:. Menu Search. User Access Log in Register. Do you need a fertility treatment?


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Gene Ontology and GO Annotations




Making Sperm, No Men Necessary : NPR
Call When a virgin queen flies to a site where thousands of male honey bees may be waiting, she mates with several males in flight. A male drone will mount the queen and insert his endophallus, ejaculating semen. After ejaculation, a male honey bee pulls away from the queen, though his endophallus is ripped from his body, remaining attached to the newly fertilized queen. The next male honey bee to mate with the queen will remove the previous endophallus and eventually lose his own after ejaculation. Male honey bees are only able to mate seven to 10 times during a mating flight, and after mating, a drone dies quickly, as his abdomen rips open when his endophallus is removed.



Making Sperm, No Men Necessary
Sperm is the male reproductive cell , or gamete , in anisogamous forms of sexual reproduction forms in which there is a larger, female reproductive cell and a smaller, male one. Animals produce motile sperm with a tail known as a flagellum , which are known as spermatozoa , while some red algae and fungi produce non-motile sperm cells, known as spermatia. Sperm cells form during the process known as spermatogenesis , which in amniotes reptiles and mammals takes place in the seminiferous tubules of the testes.





In flies, as in humans, the sperm cell spermatozoon is made up of the cell body proper, also referred to as the sperm "head," and the flagellum. The flagellum, also called the sperm "tail," is a slender lash-like appendage that protrudes from the cell body. By beating their tails, sperm cells swim to the female reproductive cell oocyte and fertilise it.

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