Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892



Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Discuss Concepts Men sometimes have reduced fertility because of testicular varicoceles, varicose veins in the testes in which blood pools. Based on what you now know of the conditions under which sperm develop properly, how do you think this condition might impair sperm development?

Summary Introduction

To review:

There are times when the male fertility is reduced because of testicular varicoceles, related to varicose veins in the testis in which blood pools. On the basis of conditions required for sperm development, explain the relation of this disorder with the impairment of sperm development.


The vein swells due to the backflow of blood and enlarges from the accumulation of blood, which is collected there that leads to the formation of varicose vein. The varicose veins are common and they affect more women than men. The varicocele occurs in the testis, known as testicular varicoceles.


The varicose veins sometimes do not cause problems, so the varicocele treatment might not be necessary. The veins enlarge in the bag of skin holding the testicles, that is, the scrotum. The condition of testicular varicoceles will not impair with sperm formation. The varicoceles commonly causes infertility by decreasing sperm quality and sperm production...

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