This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Asthenospermia means: September 2005 
Select and explain. 
A. Reduction in number of sperms, B. Reduction in motility of sperms, C. Absence of sperms, D. Absence of semen
B: Reduction in motility of sperms
Answer: B: Reduction in motility of sperms 
Explanation: Ans. B: Reduction in motility of sperms Asthenozoospermia/"asthenospermia" is the term for reduced sperm motility. It decreases the sperm quality and is therefore one of the major causes of infeility or reduced feility in men