PSYB20H3 Chapter 2: Chapter 2 Notes
Document Summary
At birth female has 2 million immature ova in her 2 ovaries, each ovum in its own small sac/follicle. After being expelled from ovary, ovum is swept along through one of the fallopian tubes by tiny hair cells, called cilia toward the utuerus or womb. Sperm produced in testicles (testes) of a mature male at rate of several hundred million a day and are ejaculated in semen at sexual climax. Deposited in vagina, they try to swim through the cervix (opening of uterus) and into fallopian tubes, but only a tiny fraction make it that far. Fertilization occurs when ovum is passing through fallopian tubes. Sperm are absorbed by the (cid:449)o(cid:373)a(cid:374)"s wbc a(cid:374)d the o(cid:448)u(cid:373) passes thru the uterus a(cid:374)d e(cid:454)its. If fertilaizito(cid:374) does(cid:374)"t o(cid:272)(cid:272)ur, o(cid:448)u(cid:373) a(cid:374)d sper(cid:373) (cid:272)ells i(cid:374) (cid:449)o(cid:373)a(cid:374)"s (cid:271)od(cid:455) die through the vagina. Inability to conceive after 12 months of trying. Most common cause of infertility in men is low sperm count or insufficiently motile sperm.
