ova- egg cells

gametes contain how many chromosomes?

what are the functions of the male reproductive system

divided into 2 sacs by septum, contains testes epididymis, part of vas deferens and beginning spermatic cords

enclosed in scrotum- must extend completely for normal production and sperm survival

sperm develop within

what cell secretes testosterone

coiled tube on surface of testes

stores sperm cells (temporarily), mature and develop capacity for motility

produce mucus- nourishment

assist sperms motility

secrete mucous- lubricate urethra

3 columns of erectile tissue

stimulates sustentacular (sertoli) cells-> promotes formation of spermatozoa

stimulates interstitial cells-> produce testosterone

effects of aging on male reproductive system

failure of testes to descend into scrotum

testes assume abnormal position

twisted spermatic cord- results from rotated testes

protrusion of an organ- fascia of organ through wall of cavity

tightness of foreskin- cannot be drawn back

solution: circumcision

holds and nourishes fetus

various passageways and external genital organs

-house and protect each ova

-secrete estrogen: stimulate growth of uterine lining

-ovulate: release of ovum

following release of ovum, follicle is transformed into ___ which secretes large amounts of ___

-develop/mature female reproductive organs

-develop/maintain secondary sex traits

-promote uterine lining thickening

-initiate menstruation

are all the functions of...

what hormone maintains gestation and assists estrogen in

initiating menses?

transport ovum away from ovary towards uterus

-site of fertilization

the female reproductive cycle is...

first 4 or 5 days of the cycle

Characterized by sloughing of bits of endometrium

(uterine lining) with bleeding

days between the end of menses and ovulation

-repair of endometrium

day 14

— - Ovum released from ovary into fallopian tube for possible

fertilization

— - Stimulated by the FSH and LH

—- Surge of LH day before ovulation

— - Possible zygote

-days between ovulation and beginning of next menses

-Fertilization can occur

-Further thickening of endometrium & secretion

 -Sudden sharp decrease in estrogen and progesterone

menstruation ceases

normal ovarian function declines

-follicles stop maturing

-no appreciable amounts of estrogen and progesterone produced

are all effects of...

absence of menstrual flow.

painful or difficult menstruation

a condition in which nervousness, irritability, and depression precede the menstrual period.

too much, too frequent or non-menstrual bleeding

due to extension of infections from reproductive organs into pelvic cavity

-involve multiple organisms