The strength of sperm's movement or exercise ability is directly related to human reproduction. Only sperm that is normal in the forward movement can ensure that the sperm reaches the belly of the tubal pot, and combines with eggs to form fertilized eggs.So, how is sperm vitality classified?
What is the normal value of sperm vitality?
Class I: No vitality.
Class II: Poor activity.
III level: good activity.
IV: Very good mobility.If 3 consecutive tests, the activity is below level II, you can determine the weak assisting picking apricot
Generally, the mobility of sperm is divided into level 5. Level 0 indicates that sperm cannot move. Level 1 indicates that the sperm activity ability is poor and only creened in place. Level 2 indicates that the sperm activity is average.OK, the straight line moves forward, and level 4 indicates that the sperm activity is excellent, showing a fast straight forward movement.In normal times, the sum of level 3 and level 4 should exceed 50%, and at least 25%of the sperm in activity sperm shows a straight line.If level 0, 1, and 2 sperm exceed 50%, level 4 is less than 25%, which is weak.
What factors can cause sperm vitality to decrease?
1. The effect of inflammation.Such as epididymal, seminal vesicles and prostate inflammation, the sperm plasma is abnormal, and its pH, nutrition and metabolism are not conducive to sperm activity and survival.
2. There is anti -sperm antibody in the body, which will condense or brake sperm.
3. Insufficient trace elements.Especially when zinc deficiency can affect sperm activity.
4. Barcopystone infection.Mycoplasma sticks to the tail of the sperm, and the sperm activity is affected by it.
5. Due to the spermatic varicose veins, there is a problem with the problem of local intravenous blood flow in the testicular. In addition, the prostaglandin and the horizontal abnormal levels of hellinine in the venous blood can cause the sperm activity to reduce the mobility.
6. Teste development is hindered.For example, testicular sperm epithelium maturity is insufficient or damaged and thinner, the sperm quality is poor, and the vitality weakens.
7. Too small semen can cause sperm activity.
(Editor in charge: Zheng Guisheng)
