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.
There are a range of defects that can be exhibited by sperm. The defects affect one of the four domains which make up a sperm cell; namely the head (part of the sperm containing DNA), the mid-piece (part of the sperm containing energy producing mitochondria), the tail (for forward motility) and the acrosome (a separate membrane on the head of the sperm responsible for binding to and fertilising the egg).