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Human reproduction

15.1 - 15.5

QuestionAnswer
What is the male hormone called? testosterone
What does the prostate gland secrete? fluids in which sperm cells can swim in
what does the acrosome contain? It contains enzymes that are released during fertilisation.
how many chromosomes do sperm cells and egg cells each contain? 23 each
what does the mitochondria do? it releases energy to power swimming by the tail
How does the egg move? the cilia move the egg cell along the oviduct
What is the cervix? cervix is a ring of muscle at the opening of the uterus
which organ produces oestrogen? the ovaries
How long can a sperm cell stay alive? 2-3 days
Why does a membrane form around the egg after fertilisation? to prevent other sperm cells from entering the egg
what is the egg called once the sperm cell penetrates the egg cell? a zygote
what is the female gamete called? ovum
what is the zygote called after the cells divide? an embryo
what is it called when the embryo gets into the lining of uterus? implantation
what is the placenta? it is the gas exchange surface for the fetus. It allows oxygen and food to diffuse to the fetal blood and carbon dioxide and wastes to diffuse out of the fetal blood
how long is a normal pregnancy? about 9 months
what is pregnancy also called? the gestation period
where are the testes located? in the scortum
How many sperm cells are produced? millions are constantly produced
how much food store does a sperm cell have? very little - only sugar in seminal fluid for respiration
Created by: iamleegitt
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