A – The reproductive system The structure and function of reproductive organs and gametes and their role in fertilisation Hormonal control of reproduction The biology of controlling fertility Ante- and postnatal screening
KA 1: The structure and function of reproductive organs and gametes and their role in fertilisation (a) gamete production in males Reproduction (c) site of fertilisation (b) gamete production in females
State the site of fertilisation in a female. KA 1: The structure and function of reproductive organs and gametes and their role in fertilisation Describe the process of gamete production in the ovaries, including the maturation of ova and the development of a (Graafian) follicle. State the site of fertilisation in a female. Describe the process of zygote formation.
The Female Reproductive System Diagram
Inside the ovary… Diagram
The Female Reproductive System Eggs or Ova are formed from germline cells in the female ovaries. The ovaries contain immature eggs at various stages of development Ovulation is when a mature ovum is released, from the ovary, into the oviduct. Fertilisation takes place in the oviduct if sperm are present and a fertilised egg or zygote will be produced. The zygote then develops into an embryo. Fertilisation Ovulation germline cells zygote oviduct Ova ovaries immature eggs
The Female Reproductive System Each ovum (egg) is surrounded by a structure called a follicle which protects the ovum The follicle secretes the female sex hormone called oestrogen After ovulation it secretes the sex hormone progesterone, as well as oestrogen. follicle ovulation progesterone oestrogen
Female Reproductive System Identify parts A-E: Zygote C B E Ovum (egg) A Endometrium layer D Ovary Uterus muscle Identify 2 processes which have occurred in this diagram Ovulation (A-B) and Fertilisation (B-C)
State the site of fertilisation in a female. KA 1: The structure and function of reproductive organs and gametes and their role in fertilisation Describe the process of gamete production in the ovaries, including the maturation of ova and the development of a (Graafian) follicle. State the site of fertilisation in a female. Describe the process of zygote formation.
Extra Resources BBC Science: Human Body and mind learner resource – Anatomy games BBC Learning Zone video – The process of sperm production BBC Learning Zone video – How small is a human egg? BBC Learning Zone video – Human fertilisation (GREAT VIDEO!)