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.
What Is Normal Sperm Motility? When sperm motility in a single ejaculate is 50% or more, this is seen to be normal. Even a lower motility, between 25% and 50%, may not lead to issues. However, when the motility is consistently under 25%, the risks of fertility problems are much greater.