Consequently, it is easy to imagine the numerous potential problems that can occur at each step, and thus may prevent a successful pregnancy. Often overlooked are the complexities of sperm transport and the steps that must occur in the sperm, a process known as capacitation, before fertilization can occur. These processes of sperm delivery and potentiation are addressed in detail in this chapter. During coitus, 1. The optimal pH for sperm viability is between 7. However, both seminal fluid and cervical mucus present within the posterior vagina are alkaline and act as buffers.
Spermatozoon - Wikipedia
Further information: Spermatozoon Function The main sperm function is to reach the ovum and fuse with it to deliver two sub-cellular structures: Anatomy Sperm and egg fusing The mammalian sperm cell can be divided in 2 parts: It also contains vacuoles. Sperm motility depends on the 4 parts of the tail: The tail or " flagellum "executes the lashing movements that propel the spermatocyte.
Advances in Urology
Glossary Fertilization Fertilization is more a chain of events than a single, isolated phenomenon. Indeed, interruption of any step in the chain will almost certainly cause fertilization failure. The chain begins with a group of changes affecting the sperm, which prepares them for the task ahead.
James A. This is an open access article distributed under the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Cryopreservation of human spermatozoa—introduced in the 's—has been recognized as an efficient procedure for management of male fertility before therapy for malignant diseases, vasectomy or surgical infertility treatments, to store donor and partner spermatozoa before assisted reproduction treatments and to ensure the recovery of a small number of spermatozoa in severe male factor infertility. Despite the usefulness of it, cryopreservation may lead to deleterious changes of sperm structure and function: