Diagram of sperm

Spermatozoon A sperm cell attempts to penetrate an ovum coat to fertilize it. Its Impact on Human Reproduction and the Health Trajectory of Offspring". Semen has an alkaline nature, and they do not reach full motility hypermotility until they reach the vagina where the alkaline pH is neutralized by acidic vaginal fluids. Views View Edit History. Spermatogenic arrest of cattleyak involves defects of both germ cells and their micro-environment in testis. Sperm quantity and quality are the main parameters in semen quality , which is a measure of the ability of semen to accomplish fertilization. Seminal vesicles excretory duct Prostate Urethral crest Seminal colliculus Prostatic utricle Ejaculatory duct Prostatic sinus Prostatic ducts Bulbourethral glands.

The specific glycoproteins coating sperm cells are also utilized by some cancerous and bacterial cells, some parasitic worms, and HIV-infected white blood cells, thereby avoiding an immune response from the host organism. Sperm of many animals has 2 typical centrioles known as the proximal centriole and distal centriole. Views Read View source View history.