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Sperm morphology is one of the parameters that are evaluated in a semen analysis. It is a measurement of the percentage of sperm that are normal in shape. A normal sperm has an oval-shaped head, a well-defined cap (acrosome) that covers part of the head, and a single midpiece and tail. During the production of sperm in the testicle (which takes about 90 days!), defects often occur. For example, sperm may have double heads, missing … Continue reading