Defects in the tail of sperm cells cause movement issues, which hinders their capacity of traveling to the Fallopian tubes, where fertilization takes place. Thus, in males who produce sperm with defects in the tail, achieving a natural pregnancy is considerably difficult. This condition is known as asthenoteratozoospermia (poor sperm morphology and motility).
Read the full article on: What Types of Sperm Morphological Defects Exist? ( 72).
By Zaira Salvador B.Sc., M.Sc. (embryologist) and Sandra Fernández B.A., M.A. (fertility counselor).
Last Update: 11/27/2018