Reproduction - Biology Double Award

Gametes:

Specialised sex cells for reproduction

What do the specialised parts of this cell do?

• Acrosome - contains enzymes to digest though the outer layer of the egg cell

• Respiration occurs in the mitochondria to release energy for the sperm to swim to the egg

• Flagellum acts as a tail/ for swimming

Fertilisation:

When the nuclei of the egg and sperm fuse to form a diploid zygote

Haploid v Diploid:

Haploid cells have one set of chromosomes - 23 chromosomes

Diploid zygotes have 46 chromosomes

Ovary:

Eggs and the female sex hormone oestrogen are produced here

Oviduct:

The egg travels along the oviduct to the uterus - cilia waft the egg along. Fertilisation occurs here if an egg meets a sperm

Uterus:

This is where the foetus develops

Cervix:

A ring of muscle at the neck of the vagina which dilates during labour

Vagina:

British canal and entry of the penis for fertilisation

Look at this label of the female reproductive system:

Female reproductive system