There is no known “safe” amount of alcohol consumption when pregnant. Even a small amount can cause complications.
Evaluate at least 200 spermatozoa, tally the numbers of live and dead spermatozoa using a laboratory counter, and calculate the percentage of live spermatozoa (see Note 10). The lower reference limit for vitality assessed by eosin–nigrosin stain (membrane-intact spermatozoa) is 58% (5th percentile, 95% CI 55–63) (1).
Answer:
a.
Explanation:
It decreases from the aorta to the vena cava.
