and amount of semen that will be ejected during an ejaculation will
vary widely between men and may contain between 0.1 and 10 milliliters.
semen volume is affected by the time that has passed since the previous
ejaculation; larger semen volumes are seen with greater durations
of sperm in an ejaculation also varies widely, depending on many factors,
including the time since the last ejaculation, age, stress levels,
lengths of sexual stimulation immediately preceding ejaculation can
result in higher concentrations of sperm.
low sperm count, not the same as low semen volume, is known as oligospermia,
and the absence of any sperm from the semen is termed azoospermia.
(originally oligozoospermia) refers to semen with a low concentration
of sperm ('sperm count')
sperm count would be defined as less than 20 million sperm per ml
sperm count should be above 60 million/ml.
to the National Institutes of Health, a "good" sperm count
is characterized by several factors.
of sperm per volume of semen is very important for fertility. On average,
each ejaculation should produce 1.5 to 5.0 milliliters of semen.
sperm count is 20 to 150 million per milliliter of semen.
and motility of the sperm can also affect male fertility. In order
for a sperm count to be considered normal, at least 60 percent of
the sperm should be normally shaped and able to swim forward.