# 82 Reproduction in humans - Reproductive system
Reproduction in humans is when the male gamete (sperm)fuses together with the female gamete (ovum/egg).
At first, it is just one single cell, which duplicates over and over until after 9 months…… TA-Dahh! - A baby is born!
Male reproductive system
At first, it is just one single cell, which duplicates over and over until after 9 months…… TA-Dahh! - A baby is born!
Male reproductive system
- Testes: produce sperm and testosterone
- Scrotum: a sac that keeps testes cool (outside body)
- Sperm ducts: link testis to urethra: allow passage of semen containing sperm
- Prostate gland: produce alkaline fluid ---> semen
- Urethra: urinate; pass semen (+sperm) through penis
- Penis: become firm, inserted into vagina during sexual intercourse ---> transfer sperm
Female reproductive system
- Ovaries: contains follicles, produce and stores eggs, produce oestrogen
- Oviducts: carries ovum to uterus; Fallopian tubes = site of fertilisation
- Uterus – where fetus develops
- Cervix- a ring of muscles that separate the vagina from the uterus
- Vagina: receives sperm from erect penis during intercourse
Comparing male and female gametes
Video: Human Body Systems - Reproductive System