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Puberty Defining - Anatomy & Physiology (view source)
Revision as of 14:54, 4 September 2008
, 14:54, 4 September 2008→Age when the Ejaculate Contains a Threshold Number of Spermatozoa
* Even if the ejaculate contains spermatozoa, there may be insufficient numbers for optimum [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|fertilization]].
* Even if the ejaculate contains spermatozoa, there may be insufficient numbers for optimum [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|fertilization]].
* The presence of a threshold (minimum number) of spermatozoa is required. These thresholds vary between species.
* 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.
* Reflect minimum seminal characteristics required to achieve pregnancy following [[Reproductive_Behaviour_-_Copulatory_Behaviour_-_Anatomy_%26_Physiology|copulation]].
* Practically, this is the most valid criterion for puberty in the male.
* Practically, this is the most valid criterion for puberty in the male.