From Robin's SM-201 Website
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Ejaculation topics
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Aspermia • Azoospermia • Coitus interruptus • Coitus reservatus • Delayed ejaculation • Erection • Female ejaculation • Premature ejaculation • Retrograde ejaculation
- Aspermia—lack of semen; anejaculation
- Asthenozoospermia—sperm motility below lower reference limit
- Azoospermia—absence of sperm in the ejaculate
- Hyperspermia—semen volume above upper reference limit
- Hypospermia—semen volume below lower reference limit
- Oligozoospermia—total sperm count below lower reference limit
- Necrozoospermia—absence of living sperm in the ejaculate
- Teratozoospermia—fraction of normally-formed sperm below lower reference limit
- Another cause of aspermia is ejaculatory duct obstruction, which may result in a complete lack or a very low-concentration of semen (oligospermia), in which the semen contains only the secretion of accessory prostate glands downstream to the orifice of the ejaculatory ducts.
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