sperms cells are sent to vas deferens after they leave the epididymis.
sperms cells are sent to vas deferens after they leave the epididymis.
where are sperms cells sent after they leave the epididymis?
vas deferens
the epididymis is a long whitish mass of tightly coiled tube. the sperm that are produced in the seminiferous tubules flow into the epididymis. during passage via the epididymis, the sperm undergo maturation and are concentrated by the action of ion channels located on the apical membrane of the epithelium.









































section::::internal genital organs.:vas deferens.









































the vas deferens, also known as the sperm duct, is a thin tube approximately long that starts from the epididymis to the pelvic cavity. it carries the spermatozoa from the epididymis to ejaculatory duct.









































section::::internal genital organs.:accessory glands.
male reproductive system
an analysis of methylation profiles of humans and primate sperm cells reveals epigenetic regulation plays an important role here as well. since mammalian cells undergo reprogramming of dna methylation patterns during germ cell development, the methylomes of human and chimp sperm can be compared to methylation in embryonic stem cells (escs). there were many hypomethylated regions in both sperms cells and escs that showed structural differences. also, many of the promoters in human and chimp sperm cells had different amounts of methylation. in essence, dna methylation patterns differ between germ cells and somatic cells as well as between the human and chimpanzee sperm cells. meaning, differences in promoter methylation could possible account for the phenotypic differences between humans and primates.
contribution of epigenetic modifications to evolution