A sperm cell attempts to penetrate an ovum coat to fertilize it.
Diagram of a human spermatozoon
Details
Identifiers
Latin
spermatozoon
MeSH
D013094
Anatomical terms of microanatomy
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A spermatozoon (/spərˌmætəˈzoʊ.ən,ˌspɜːrmətə-/;[1] also spelled spermatozoön; pl.: spermatozoa; from Ancient Greek σπέρμα (spérma) 'seed', and ζῷον (zôion) 'animal') is a motile sperm cell, or moving form of the haploid cell that is the male gamete. A spermatozoon joins an ovum to form a zygote. (A zygote is a single cell, with a complete set of chromosomes, that normally develops into an embryo.)
Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring (excluding, in most cases, mitochondrial DNA). In mammals, the sex of the offspring is determined by the sperm cell: a spermatozoon bearing an X chromosome will lead to a female (XX) offspring, while one bearing a Y chromosome will lead to a male (XY) offspring. Sperm cells were first observed in Antonie van Leeuwenhoek's laboratory in 1677.[2]
A spermatozoon (/spərˌmætəˈzoʊ.ən, ˌspɜːrmətə-/; also spelled spermatozoön; pl.: spermatozoa; from Ancient Greek σπέρμα (spérma) 'seed', and ζῷον (zôion) 'animal')...
an ovum, and a male produces the smaller type, called a sperm cell or spermatozoon. Sperm cells are small and motile due to the presence of a tail-shaped...
such as mammals, paternal mitochondria brought to the oocyte by the spermatozoon are degraded through the attachment of ubiquitinated proteins. The destruction...
the end of the process, it has radically transformed into an elongated spermatozoon, complete with a head, midpiece, and tail. The process of spermiogenesis...
movement within a living organism, especially a motile gamete such as a spermatozoon (in the case of algae now zoid), or an independent animal-like organism...
inside the male gonads (testicles) via meiotic division. The initial spermatozoon process takes around 70 days to complete. The process starts with the...
outcome of assisted reproduction procedures, facilitating conception. Spermatozoon is the male gamete. After ejaculation this cell is not mature, so it...
division. Usually 23 chromosomes from spermatozoon and 23 chromosomes from egg cell fuse (approximately half of spermatozoons carry X chromosome and the other...
apparatus origin, commonly located at the tip of the head of the mature spermatozoon, Which contains a variety of enzymes and antigens required for fertilization...
reproductive system is achieved via muscle contraction rather than the spermatozoon's recently acquired motility. At all stages of differentiation, the spermatogenic...
childbirth. The ova, which are the female sex cells, are much larger than the spermatozoon and are normally formed within the ovaries of the female fetus before...
Fertilization is the event where the egg cell fuses with the male gamete, spermatozoon. After the point of fertilization, the fused product of the female and...
Asthenozoospermia (reduced sperm motility) and Oligozoospermia (low spermatozoon count) This disambiguation page lists articles associated with the title...
"Beta-chemokine receptors 5 and 3 are expressed on the head region of human spermatozoon". The FASEB Journal. 19 (14): 2048–50. doi:10.1096/fj.05-3962fje. hdl:11573/361629...
non-linear motility pattern as sperm approach the oocyte. The capacitated spermatozoon and the oocyte meet and interact in the ampulla of the fallopian tube...
In humans, this is 23 unpaired chromosomes. When two gametes (i.e. a spermatozoon and an ovum) meet during conception, they fuse together, creating a zygote...
Ryder JA, ed. (February 1889). "Embryology: The Structure of the Human Spermatozoon". American Naturalist. 23: 184. It may possibly be of advantage to use...
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