16 Flashcards
(17 cards)
reproduction
a process of making more of the same kind of organism to prevent extinction and to conserve species.
cell division
meiosis
mitosis
meiosis
1- gametes - different features and characteristics
2- haploid
3- 1 set of chromosomes
4- half number of chromosomes
mitosis
1- somatic cell - same characteristics and features
2- diploid
3- 2 sets of chromosomes
4- full number of chromosomes
sexual reproduction
1- two parents
2- male gamete and female gamete
sperm cell egg cell
haploid haploid
3- meiosis - male - testes - sperm cell
4- meiosis - female - ovary - egg cell
fertilization
when 2 nuclei of sperm and egg cells fuse, zygote is produced
the male reproductive system
1- testes
2- scrotum
3- sperm ducts
4- prostate glands
5- urethra
6- penis
7- epididymis
8- seminal vesicles
9- cowpers gland
function of testes
- production of sperms
- production of testosterone which stimulates the development of the secondary sexual characteristics in males
function of scrotum
- protection of testes
- ensures testes are kept in a temperature lower than normal body temperature needed for sperm production
function of sperm ducts
tube through which sperms move
function of prostate glands
- produce fluid that provide nutrients for sperm cells
- allow sperms to swim
- neutralize the acidity in vagina
function of urethra
tube through which semen moves
function of penis
through which semen is released out
function of epididymis
stores semen
function of seminal vesicles
- produce fluids that protects sperm from acidity in vagina
- nourishes sperm
function of cowpers gland
produce mucus before ejaculation in order to clean urethra from any remaining urine
semen
mixture of sperm cells and fluids produced by seminal vesicle, prostate gland and cowpers gland
