Further information: Testicular infertility factors
|(A)spermia - complete lack of semen|
|(Asthenozoo)spermia - reduced sperm motility|
|(Azoo)spermia - absence of sperm cells in semen|
|(Hyper)spermia - large semen volume|
|(Hypo)spermia - small semen volume|
|(Oligozoo)spermia - few spermatozoa in semen|
|(Necrozoo)spermia - dead or immobile sperms|
|(Teratozoo)spermia - sperm with abnormal morphology|
Hyperspermia is the medical term for when a male has an abnormally large ejaculate (or semen) volume. Males with hyperspermia usually have higher sex drives than males that do not. It is the opposite of hypospermia, and is generally defined in humans when the ejaculate is over 15.5 ml. Average output of hyperspermia males range from 5-50 ml per ejaculation and can be produced over multiple ejaculations in a single sexual session. Three percent of males are able to have multiple ejaculations over any given time.
- Padubidri; Daftary (2011). Shaw's Textbook of Gynaecology, 15e. p. 204. ISBN 9788131225486
- S. Cooke, J.P.P. Tyler1 and G.L. Driscoll. Andrology: Hyperspermia: the forgotten condition? ml1994-07-08.
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