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IGCSE-

Human reproduction

QuestionAnswer
What are the testes? Male sex organs
What do testes produce? Male gametes or spermatozoa
what do the sperm cells and the fluid form together? semen
What are gametes? sex cells
Whats the female gamete called? Ovum or egg
What are ovaries? female sex organs that produce the female gametes called ova or eggs
What does oestrogen do? it stimulates the development of the sex organs and secondary sexual characteristics in a girls body as she develops to a adult.
Whats the cervix? lower end of uterus that has a ring of muscles
What does the urethra do? urine from the bladder passes out
whats the outer opening of the vagina called? vulva
why are many sperms produced? to increase the chance of some reaching the oviduct
what is released by the acrosome? enzymes
what immediately forms around a fertilised egg? a membrane
another word for egg? zygote
how long can a sperm stay alive for? 2 or 3 days
what happens when the egg is fertilised? it divides
whats formed from embryonic tissue? placenta
what joins the fetus to the placenta? umbilical cord
how long does pregnancy last? 9 months
when does the fetuses heart start beating? 4 weeks
what foods does the fetus obtain from the mother? glucose, amino acids, fats, mineral ions, vitamins, water
Created by: hcarr
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