Human Reproductive Systems

• The prostate gland produces fluid called semen that provides sperm cells with nutrients
• Sperm passes through the sperm duct to be mixed with fluids produced by the glands before being passed into the urethra for ejaculation
• The urethra is a tube running down the centre of the penis that can carry out urine or semen, a ring of muscle in the urethra prevents the urine and semen from mixing
• The testis is contained in a bag of skin (scrotum) and produces sperm and testosterone
• The scrotum is a sac supporting the testes outside the body to to ensure sperm are kept at a temperature slightly lower than body temperature
• The penis passes urine out of the body from the bladder and allows semen to pass into the vagina of a woman during sexual intercourse
• The oviduct connects the ovary to the uterus and is lined with ciliated cells to push the released ovum down it. Fertilisation occurs here
• The ovary contains ova (female gametes) which will mature and develop when hormones are released
• The uterus is a muscular bag with a soft lining where the fertilised egg (zygote) will be implanted to develop into a foetus
• The cervix is a ring of muscle at the lower end of the uterus to keep the foetus in place during pregnancy
• The vagina is a muscular tube that leads to the inside of the woman's body, where the male's penis will enter during sexual intercourse and sperm are deposited