home / medterms medical dictionary a-z list / apls (antiphospholipid antibody syndrome) definition Medical Definition of APLS (antiphospholipid antibody syndrome) Our Antiphospholipid Syndrome Main Article provides a comprehensive look at the who, what, when and how of Antiphospholipid Syndrome
Sperm motility describes the ability of sperm to move properly through the female reproductive tract (internal fertilization) or through water (external fertilization) to reach the egg.
Semen should be thick to start with and become thinner 10 to 15 minutes after ejaculation. Semen that stays thick may make it difficult for sperm to move. Sperm concentration. Also called sperm density, this is the number of sperm in millions per milliliter of semen. Fifteen million or more sperm per mL is considered normal. Sperm motility. This is the percentage of sperm in a sample that are moving, as well as an assessment of how they move.