Evolution to Genetics 3 Human reproductive system

3

Sexual vs Asexual Reproduction – Recap: 

• Sexual reproduction involves two parents and creates genetically unique offspring.

• Asexual reproduction involves one parent and creates genetically identical offspring.

Key idea: Humans reproduce sexually, meaning special organs are needed to produce, transport, and unite sex cells (gametes).

The Male Reproductive System: 

• Testes: Produce sperm and testosterone

• Scrotum: Holds testes outside body for cooler temperature

• Vas deferens: Transports sperm

• Urethra: Path for urine and sperm

• Penis: Delivers sperm to female

The Male Reproductive System travel system

• The sperm travel from the testis to the vas deferens through a tube called the epididymis. 

• The vas deferens is a duct that then transports the sperm to the ejaculatory duct. 

• The penis has a single opening called the urethra, and both sperm and urine can travel down this passage (unlike women).

The Female Reproductive System: 

• Ovaries: Produce eggs and hormones (oestrogen, progesterone)

• Fallopian tubes: Where fertilisation usually occurs

• Uterus: Where the fertilised egg implants and grows

• Cervix: Opening to uterus, helps keep baby inside during pregnancy

Vagina: Receives sperm; birth canal