50% and above of the total sperms
motility of sperm help yes/no
The quality of sperm is based on its volume and motility which depends on a man's age. The older they get, the sperm volume and motility decreases.
A normal semen analysis can involve several factors. According to the WHO (World Health Organization) standards, a total motile sperm count 16 million or greater is normal. Total motile sperm is calculated using the volume of the semen(1.5ml to 5ml is normal) multiplied by the concentration of the semen (much sperm is present in 1ml of semen). Normal values for concentration is 15 Million/ml or greater. Then you take that number and multiply it by the percentage of motile sperm (how much of the sperm is actually moving). A normal motility is >=40%. ie: 1.5ml x 45M/ml x 40%motility= 27M(total motile sperm per specimen). In addition to this number, andrologist also look at sperm morphology and progressive motility (how well your sperm move).
Normal range of sperms in your body is between 60 to 120 million/ ml. Three to five ml/ejaculate. Below that is called as oligospermia. Fertility is very less when the sperm count drop below 20 million/ ml. Motility and morphology is also very important for fertility.
It depends on the cause(s) of low motility.
Quality , Quantity and Motility
Flagellum
The tail is for motility.
No. The hormone RELAXIN combines with the enzymes in semen to enhance sperm motility.
A mature sperm is one that is fully formed and has adequate motility.
"Sterile" men have sperm with low motility rates (meaning there either isn't as many sperm as normal, or the sperm that is there is not as active as normal). This makes it much harder than normal for that male to fertilize an egg. How likely it is that he MIGHT still fertilize largely depends on what is causing the 'sterility'.
Depending on the sperms' motility, yes, a sperm count of 8 million could make a baby.