- motile sperm
- Characteristic unique to Cycadales and Ginkgoales among the seed plants.
Expanded glossary of Cycad terms . 2014.
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Sperm donation — is the provision (or ‘donation’) by a man, (known as a ‘sperm donor’), of his sperm, with the intention that it be used to impregnate a woman who is not usually the man s sexual partner, in order to produce a child. A sperm donor is the natural… … Wikipedia
Sperm — The term sperm is derived from the Greek word (σπέρμα) sperma (meaning seed ) and refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes… … Wikipedia
Sperm bank — A sperm bank or cryobank is a facility that collects and stores human sperm mainly from sperm donors, primarily for the purpose of achieving pregnancies through third party reproduction, notably by artificial insemination. Sperm donated in this… … Wikipedia
sperm immobilization test — (for male factor infertility) a test for antisperm antibodies as a cause of infertility, based on the fact that spermatozoa with such surface antibodies lose their ability to move if complement is present (as it normally is in the female… … Medical dictionary
motile — 1. Having the power of spontaneous movement. 2. Denoting the type of mental imagery in which one learns and recalls most readily that which has been felt, i.e., having a kinesthetic representational system. Cf.:audile. 3. A person having such… … Medical dictionary
sperm cell — A small, usually motile gamete … Dictionary of invertebrate zoology
motile — adj. being able to move spontaneously, without external aid: usually applied to a microorganism or a cell (e.g. a sperm cell) … The new mediacal dictionary
Posthumous sperm retrieval — (PSR) is a procedure in which spermatozoa are extracted from a man after he has been pronounced legally brain dead. There has been significant debate over the ethicality and legality of the procedure, and on the legal rights of the child and… … Wikipedia
Major sperm protein — MSP Structure of MSP dimer from A. suum. The β sheets are shown in orange Identifiers Symbol Major Sperm Protein, MSP Entrez … Wikipedia
microsurgical epididymal sperm aspiration — (Mesa) the removal of spermatozoa from the epididymis by needle aspiration. This procedure, performed under anaesthetic, may be undertaken to assist conception in cases where the normal passage of sperm from the testis is obstructed, for example… … Medical dictionary