bio 34.2

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viral infections

stds, hepatitis b, genital herpes, human paplimoavs, hiv -attacks body cells. causes infertility and death -no cure

female- b4 birth male- @ puberty

at what stage of life does egg or sperm production begin

...

check study guide

bacterial infection

chlamydia, syphilis, gonorrhea -attack and destroy repro organs and causes infertility -antibotics

monthly changes in female repro sys-maturing and releasing the egg and preparing the uterus to recieve a zygote

define menstrual cycle

utuerus lining, endometrium flows out of the body with some blood and all hormones are low

flow phase details

increase in FSH and LSH and stimulates maturing and release of the egg, ovulation. increase in estrogen causes the lining of the uterus to thicken.

follicular phase details

in flow phase endometrium detaches from the uterus and is expelled from the body in follicular and luteal endometrium thickens.

how does the endometrium change during the three phases of the menstrual cycle

nuclei of the sperm and egg unite

how is a zygote produced

vas deferins tube is small or obstructed organs damaged from injurey or disease low sperm count

list 3 reasons a person might become infertile

corpus luteum forms. release of estrogen and progesterone stops production of FSH and LSh. increase the number of blood vessels in the uterus.

luteal phase details

1 sperm penetrates membrane and all. then these chem reacs take place inside egg- egg begins to change and membrane becomes impenetrable

out of millions of sperm usually only one can fertilize an egg. explain y

must b passed thru person 2 person contact

what characteristics must a disease have for it to be sexually transmitted disease.

23 chromos from sperm and 23 from egg unite with it and produce zygote with 46.

what happens genetically to produce a zygote

fe-FSh and LH and estrogen male- fsh lh annd testostone

what hormones stimulate the cycle of egg or sperm production

develop and release an egg and prepare the uterus to receive it

what r the funcs of the menstrual cycle

for female and male meiosis 1 and 2

what type of cell division produces mature eggs and sperm


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