Sperm

Sperm (pl.: sperm or sperms) is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction (forms in which there is a larger,...

extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia. The sperm whale is a pelagic mammal...

Sperm donation is the provision by a man of his sperm with the intention that it be used in the artificial insemination or other "fertility treatment"...

in females that stores sperm for later use, the sperm sac. Milt, sperm sacs, large sacs containing large amounts of matured sperm. Epididymis, a part of...

Female sperm can refer to either: A sperm which contains an X chromosome, produced in the usual way in the testicles, referring to the occurrence of such...

leaves the male body the sperm's survival likelihood is reduced and it may die, thereby decreasing the total sperm quality. Sperm cells come in two types...

Sperm competition is the competitive process between spermatozoa of two or more different males to fertilize the same egg during sexual reproduction....

A sperm granuloma is a lump of leaked sperm that appears along the vasa deferentia or epididymides in vasectomized individuals. While the majority of...

Sperm precedence, also known as sperm predominance, is tendency of a female who has been bred by multiple males to give birth to their offspring in unequal...

result in pregnancy. "Sperm theft" (also known as "unauthorized use of sperm", "spermjacking" or "spurgling" (a portmanteau of sperm and burgling)), refers...

Sperm competition is a form of post-copulatory sexual selection whereby male sperm simultaneously physically compete to fertilize a single ovum. Sperm...

competition Sperm donation Sperm granuloma Sperm guidance Sperm heteromorphism Sperm motility Sperm precedence Sperm sorting Sperm theft Sperm washing Catch...

Artificial insemination is the deliberate introduction of sperm into a female's cervix or uterine cavity for the purpose of achieving a pregnancy through...

Sperm oil is a waxy liquid obtained from sperm whales. It is a clear, yellowish liquid with a very faint odor. Sperm oil has a different composition from...

is also referred to as ejaculate analysis, human sperm assay (HSA), sperm function test, and sperm assay. Semen analysis is a complex test that should...

three extant species of whales: the sperm whale, in the genus Physeter, and the pygmy sperm whale and dwarf sperm whale, in the genus Kogia. In the past...

a sexual partner. Sperm sold by a sperm donor is known as donor sperm. A sperm bank may be a separate entity supplying donor sperm to individuals or to...

The dwarf sperm whale (Kogia sima) is a sperm whale that inhabits temperate and tropical oceans worldwide, in particular continental shelves and slopes...

Human fertilization is the union of an egg and sperm, occurring primarily in the ampulla of the fallopian tube. The result of this union leads to the...

established the need of interaction between the female's ovum and male's sperm to form a zygote in frogs. In 1827, Karl Ernst von Baer observed a therian...