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Puberty Defining - Anatomy & Physiology (view source)
Revision as of 14:31, 4 September 2008
, 14:31, 4 September 2008→Age when the Ejaculate Contains a Threshold Number of Spermatozoa
== Age when the Ejaculate Contains a Threshold Number of Spermatozoa ==
== Age when the Ejaculate Contains a Threshold Number of Spermatozoa ==
* Even if the ejaculate contains spermatozoa, there may be insufficient numbers for optimum fertilization.
* The presence of a threshold (minimum number) of spermatozoa is required. These thresholds vary between species.
* Reflect minimum seminal characteristics required to achieve pregnancy following copulation.
* Practically, this is the most valid criterion for puberty in the male.
= Female =
= Female =