fertilization of an ovum takes place inside the body.
fertilization of an ovum takes place inside the body.
where does fertilization of an ovum take place?
inside the body
the acrosomal reaction normally takes place in the ampulla of the fallopian tube (site of fertilization) when the sperm penetrates the secondary oocyte. a few events precede the actual "acrosome reaction". the sperm cell acquires a "hyperactive motility pattern" by which its flagellum produces vigorous whip-like movements that propel the sperm through the cervical canal and uterine cavity, until it reaches the isthmus of the fallopian tube. the sperm approaches the ovum in the ampulla of the fallopian tube with the help of various mechanisms, including chemotaxis. glycoproteins on the outer surface of the sperm then bind with glycoproteins on the zona pellucida of the ovum.
acrosome reaction
during ovulation, the ovum travels down the fallopian tubes to the uterus. these extend about from both sides of the uterus. finger-like projections at the ends of the tubes brush the ovaries and receive the ovum once it is released. the ovum then travels for three to four days to the uterus. after sexual intercourse, sperm swim up this funnel from the uterus. the lining of the tube and its secretions sustain the egg and the sperm, encouraging fertilization and nourishing the ovum until it reaches the uterus. if the ovum divides after fertilization, identical twins are produced. if separate eggs are fertilized by different sperm, the mother gives birth to non-identical or fraternal twins.
human sexuality