With regard to male reproductive functioning, which of the following statements is the most accurate?
A) Because older men are less likely to have sex regularly, viable sperm count increases with age.
B) There are no changes in quantity or quality of sperm with age except among men with heart problems.
C) Men typically experience a decline in the quantity of sperm that they produce as they age.
D) Because of prostate shrinkage, men are often unable to have erections at all after age 70.

Question

With regard to male reproductive functioning, which of the following statements is the most accurate?
A) ​Because older men are less likely to have sex regularly, viable sperm count increases with age.
B) ​There are no changes in quantity or quality of sperm with age except among men with heart problems.
C) ​Men typically experience a decline in the quantity of sperm that they produce as they age.
D) ​Because of prostate shrinkage, men are often unable to have erections at all after age 70.

Quizplus · Accepted Answer

Research has shown that men typically experience a decline in the quantity of sperm that they produce as they age. This decline begins in a man's 40s and continues throughout his life. Some studies have also suggested that the quality of sperm may decrease with age, potentially leading to a higher risk of infertility and birth defects in offspring.

Option A is incorrect as viable sperm count actually decreases with age. 
Option B is incorrect as there is evidence to suggest that quantity and quality of sperm can decline with age even in men without heart problems. 
Option D is incorrect as prostate shrinkage can contribute to difficulty with urination and ejaculation, but it does not necessarily lead to complete inability to have erections.

With Regard to Male Reproductive Functioning, Which of the Following