reproductive system

Testis

Produce sperm and testosterone

Epididymis

Matures and stores sperm

Sperm duct

Carrys sperm from the epididymis to the urethra

Seminal vesicles/ cowpers gland/ prostate gland

Produces seminal fluid which feeds the sperm and allows it to swim. Sperm and seminal fluid are collectively called semen

Urethra

Allows the passage of either urine or sperm

Penis

Places sperm inside body of a female

Scrotum

Keeps testes at a lower temperature (35°). This is the optimal temperature for meiosis to occur.

Infertility

The inability to produce offspring

acrosome

contains digestive enzymes to break down wall of egg during fertilisation

sperm nucleus

contains 23 chromosomes

collar

contains mitochondria

flagellum

allows sperm to swim within the female reproductive system, moving from the cervix to the fallopian tube where fertilisation occurs

ovary

produces the egg (ova) and the hormones oestrogen and progesterone

fallopian tube

catches the egg from the ovary and transport it to the uterus, site of fertilisation

uterus

site of implantation. Holds the developing embryo. Has a lining (endometrium) enriched with blood vessels to nourish the embryo. Forms the placenta.

vagina

allows entry of sperm and exit of baby at birth

Primary sexual characteristics

the presence of the male and female reproductive parts

Secondary sexual characteristics

features that distinguish males from females, apart from the sex organs themselves