Human Reproductive System Flashcards
thin walled chambers that are repository for sperm during copulation; also known as the birth canal
vagina
opening of the vagina; protects the opening of the urethra and vagina
vulva
what are the 4 parts that make up the vulva?
labia majora, labia minora, hymen, clitoris
provides milk; not a part of the reproductive system but is important in reproduction
mammary glands
consist of highly coiled tubes surrounded by connective tissue; produces sperm cells
testes
in the testes; site of sperm formation
seminiferous tubules
scattered between tubules and produces hormones
leydig cells
allows for maturation of sperm cells; pathway of ejaculation
epididymis
contribute to about 60% of volume to semen;
seminal vesicles
secretes its products through the urethra; produces most of the liquid that makes up semen
prostate gland
allows passage of urine and semen
urethra (within the penis shaft)
provides sensation because of its numerous nerve endings; most sensitive part of the penis
glans
thin layer of skin that protects the glans; removed during circumcision
prepuce
holds the testes and controls the temperature
scrotum
suspends the testes, carries blood to it, and carries sperm cells from the testes
spermatic cord
provides storage for sperm
vas deferens
contributes fructose to semen to nourish the sperm; provides about 60% to the volume of the semen
seminal vesicle
produces pre-ejaculatory fluid that cleans and neutralizes the urethra before ejaculation
cowper’s gland or bulbourethral gland
composed of 3 cylinders of erectile tissue
penis
production of gametes
gametogenesis
gametogenesis of males
spermatogenesis
gametogenesis of females
oogenesis
occurs in most mammals in place of the menstrual cycle; endometrium is reabsorbed by the uterus
estrous cycle
fertilization of an egg by a sperm
conception
phase in mitosis wherein a zygote begins to divide
cleavage
a ball of cells with a cavity
blastocyst
external reproductive parts in females
labia majora, labia minora, clitoris
external reproductive parts in males
scrotum, penis
what is the path of sperm during ejaculation?
testes, vas deferens, ejaculatory duct, urethra
for every spermatogonium, how many spermatocytes are produced?
4
for every oogonium, how many oocytes are produced?
1
approximately how many cycles before a female undergoes menopause?
500 cycles
houses, protects, and nourishes the embryo/fetus; known as womb
uterus
gateway between the vagina and uterus
cervix
provides storage and allows maturation of egg cells
ovary
allows passage of the egg to the uterus
oviduct or fallopian tube
guides a mature egg released by the ovary into the fallopian tube
fimbria
fertilized eggs are laid outside the female’s body and develops there
oviparity