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Chapter 9

Female cell egg
male cell sperm
male and female cells are called gametes
when the male and female gametes join together this is called fertilisation
the first cell of a new individual is called a zygote
sperm and testosterone are produced in the Testis
the scrotum Holds the testis
the sperm duct carries sperm from the testis to the penis
Urethra tube which exits from the bladder through the penis
prostrate gland and seminal vesicles make seminal fluid
Testosterone is a hormone , it controls male characteristics such as deepening of the voice
the ovary produces eggs
the oviduct is also called the fallopian tube
the uterus is also called the womb
the vagina holds the penis during intercourse
the cervix is the entrance to the womb
oestrogen controls female characteristics such as widening of the hips
the menstrual cycle is 28 days long
the function of the menstrual cycle is to allow the egg in the ovary to mature
having a period is also called menstruation, this lasts for about 5 days
ovulation is the release of the egg from the ovary , day 14
the fertile period is the days before and after day 14 when pregnancy can occur
sperm and seminal fluid are called semen
when semen are released this is called ejaculation
when a sperm and egg join a zygote is formed
the zygote develops into the embryo
when the embryo embeds in the lining of the womb this is called implantation
after seven weeks the embryo is then called a foetus
the fluid surrounding the foetus is called amniotic fluid
exchange of gases between mother and baby occurs through the placenta
the baby is connected to the placenta by the umbilical cord
the 3 stages of birth are labour, birth and removal of the placenta
breast milk contains antibodies
natural contraception involves being familiar with the menstrual cycle so as the time of ovulation may be identified
methods of artificial contraception include using a condom, a diaphragm, the pill or the bar
IVF stands for in Vitro Fertilisation
HRT stands for Hormone replacement therapy
Created by: PDervin