KEY WORDS AND DEFINITIONS - Penis is The organ in the male reproductive system that carries urine and semen to the outside of the body. Vagina is A muscular tube that leads from the cervix to the outside of a woman's body. Reproductive system are The organs and tissues involved in producing offspring. Testicle is The male reproductive organ the produces sperm in animals Ovary is A pair of organs in the female reproductive system where ova (eggs) and hormones are produced. Ova is The female gametes produced by ovaries in animals (singular: ovum) Sperm is The male sex cell or gamete Foetus is An unborn baby. Usually eight weeks from conception. Gamete is The sex cell of an organism, in humans they are sperm (male) and ovum (female) Uterus is Also known as a womb. This is where the fertilised egg (ovum) develops. Oviduct is Also called a Fallopian tube or egg tube, this tube leads from an ovary to the uterus. Ovulation is The process of releasing an egg from an ovary. Umbilical cord is The cord that connects the foetus to the placenta. It contains blood vessels. Placenta is The organ in the uterus of pregnant mammals that allows the transfer of nutrients and waste products between the mother and the foetus through the umbilical cord. Fertilisation is the joining of the nucleus of two gametes Embryo is An organism in the early stages of development Gestation is The time during which a fertilised egg develops into a baby ready to be born. Amniotic fluid is Liquid that protects the foetus in the uterus. Menstruation is The loss of blood and tissue from the lining of the uterus through the vagina during the menstrual cycle. Implantation is When embryo embeds itself in the uterus wall Zygote Cell is formed when two gametes combine