Dictionary » A » Azoospermia




The absence of motile spermatozoa in semen.


Azoospermia may be caused by a defect in spermatogenesis or by a physical obstruction that hinders the sperm to be mixed with the rest of the ejaculatory fluid.

Word origin: a-, without + -zoo- » Greek zôion, animal + -spermia.

Compare: oligozoospermia, polyspermia.
See also: sperm count.

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Re: Evolution of sexual reproduction

... In particular the gene “(USP9Y) is critical for spermatogenesis in humans, with any gene disruptive mutations at this locus resulting in azoospermia or the absence of sperm in seamen. Thus the potential loss of this specific gene in the chimpanzee lineage is especially puzzling.” Why ...

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by jevg
Tue Aug 17, 2010 4:25 pm
Forum: Evolution
Topic: Evolution of sexual reproduction
Replies: 29
Views: 36228

Define the following terms

1. Marsupials 2. Microlecithal eggs, Mesolecithal eggs 3. Neoteny 4. retrogressive Metamorphosis 5. Androgamone-1 6. Gynogamone-1 7. Azoospermia 8. Inguinal Canal

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by agent007
Thu Apr 29, 2010 4:03 pm
Forum: Zoology Discussion
Topic: Define the following terms
Replies: 2
Views: 3054

Traits Question

... colony-stimulating factor receptor, alpha subunit on the Y chromosome), * ANT3Y (adenine nucleotide translocator-3 on the Y), * AZF2 (azoospermia factor 2), * BPY2 (basic protein on the Y chromosome), * AZF1 (azoospermia factor 1), * DAZ (deleted in azoospermia), * RBM1 (RNA binding ...

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by b_d_41501
Thu Jun 02, 2005 9:38 pm
Forum: Genetics
Topic: Traits Question
Replies: 10
Views: 8942

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