Semen analysis is a simple test commonly used to evaluate male reproductive function, especially for couples having difficulty conceiving.

Sperm morphology includes the size and shape of individual sperm. It is one of the only factors that contributes to male fertility.

Normal sperm morphology refers to the size and shape of individual sperm when viewed under a microscope. This is one of the important factors that contribute to male fertility. In particular, head shape is very important because it affects the ability of sperm to dissolve with the outer surface of the egg and fertilize it.