Answer:
Step-by-step explanation:
Decreased sperm motility may be caused by a defect in the flagellum, which is the structure responsible for propelling the sperm forward.
The flagellum is a long, whip-like structure that extends from the body of the sperm and propels it through the female reproductive tract. It is composed of microtubules and other proteins, which work together to create a wave-like motion that propels the sperm forward.
If there is a defect in the structure or function of the flagellum, it can result in decreased sperm motility and reduced fertility. Other factors that can affect sperm motility include hormonal imbalances, infections, exposure to toxins, and genetic abnormalities. A semen analysis can help to identify these factors and guide treatment options.