Sperm
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  Sperm



Sperm

    A sperm cell, or spermatozoon (pl. spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. It is carried in fluid called semen, and is capable of fertilising an egg cell to form a zygote. A zygote can grow into a new organism, such as a human. Sperm cells contain half of the genetic information needed to create life. Generally, the sex of the offspring is determined by the sperm, through the chromosomal pair "XX" (for a female) or "XY" (for a male).

RELATED TERMS
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Sperm
A sperm cell, or spermatozoon (pl. spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. It is carried in fluid called semen, and is capable of fertilising an egg cell to form a zygote. A zygote can grow into a new organism, such as a human. Sperm cells contain half of the genetic information needed to create life. Generally, the sex of the offspring is determined by the sperm, through the chromosomal pair "XX" (for a female) or "XY" (for a male).

Cell
Fundamental structural unit of all life. The cell consists primarily of an outer plasma membrane, which separates it from the environment; the genetic material (DNA), which encodes heritable information for the maintainance of life; and the cytoplasm, a heterogeneous assemblage of ions, molecules, and fluid.

Spermatozoon
(plural, spermatozoa) The male gamete; a haploid, usually small, flagellated cell.

Semen
The fluid containing sperm (the male reproductive cells) that is expelled (ejaculated) through the end of the penis when the man reaches sexual climax (orgasm).

Haploid
A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells of animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their reproductive cells.

Gamete


Zygote
A fertilized egg. Or the diploid cell that results from the joining of two haploid gametes (sperm and egg) during sexual reproduction, that will cleave to form an embryo.

Organism
A living thing, such as an animal, a plant, a bacterium, or a fungus.

Genetic
Hereditary. Having to do with the genes.



SIMILAR TERMS
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Sperm allergy
An immune reaction to sperm, causing your body to produce antibodies that kill or disable sperm. In a small percentage of women (some estimate less than 2 percent) this condition can be serious enough to cause infertility; men can also develop antibodies to their own sperm.

Sperm antibodies
An immune reaction to sperm, causing your body to produce antibodies that kill or disable sperm. In a small percentage of women (some estimate less than 2 percent) this condition can be serious enough to cause infertility; men can also develop antibodies to their own sperm.

Sperm bank
An organization that collects and stores sperm for artificial insemination. Individuals or couples can store their own sperm for later use, or can get sperm from donors.

Sperm motility
The ability of sperm to move and swim quickly.

Spermatogenesis
Formation of sperm.

Spermatorrhea
The term for ejaculation while asleep and having an erotosexual dream, medically used in the era when this normal occurrence was falsely classified as pathology.

Spermatozoa
(singular, spermatozoon) The male gamete; a haploid, usually small, flagellated cell.

Spermatozoon
(plural, spermatozoa) The male gamete; a haploid, usually small, flagellated cell.

Spermicide
A chemical agent that kills sperm. Used as a form of birth control, either alone or paired with another method such as a condom or diaphragm.



PREVIOUS AND NEXT TERMS
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Sarcoma
A cancer of the bone, cartilage, fat, muscle, blood vessels or other connective or supportive tissue. A sarcoma is also defined as malignant mesenchymal neoplasm; e.g. osteosarcoma, (malignant mesenchymal neoplasm arising from bone tissue). Malignant tumor of soft tissue (tissue that connects, supports or surrounds other structures and organs of the body). Soft tissue includes muscles, tendons, fibrous tissues, fat, blood vessels and nerves.

Serous membrane
A thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid

Serum
The fluid portion of the blood. It is essentially similar in composition to plasma but lacks fibrinogen and other substances that are used in the coagulation (blood clotting) process.

Systolic
Measurement of the maximum blood pressure in the arteries. The larger number is the systolic pressure caused by each pump of the heart.

Semen
The fluid containing sperm (the male reproductive cells) that is expelled (ejaculated) through the end of the penis when the man reaches sexual climax (orgasm).

Sperm

Spermatozoon
(plural, spermatozoa) The male gamete; a haploid, usually small, flagellated cell.

Spermatozoa
(singular, spermatozoon) The male gamete; a haploid, usually small, flagellated cell.

Skin
Skin is an organ of the integumentary system; which is composed of a layer of tissues that protect underlying muscles and organs. Skin is used for insulation, vitamin D production, sensation, and excretion (through sweat).

Sex
An individual's gender classification - male or female.

Second Messenger
Molecules that are synthesized in response to hormones binding to their receptors. Second messengers initiate the biological action of the hormone.

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