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State two changes that happens to a girl during puberty?
breast develop, periods starts, hips widen, growth spurt, emotional changes, pubic hair and uderarm hair
State TWO changes that happens to a boy during puberty
voice breaks, testes and penis get bigger, testes start to repoduce sperm, shoulkder widen, hair grows on the face and chest, growth spurt, body odour,
All of the changes that take place in your body during puberty are cause by _______________
sex hormones
male sex cells are called
sperm cells
Name the part that produce nutrients that help to keep sperm alive
glands
Name the tubes that carry sperm from the testes to the penis
sperm ducts
Name the part that carry an egg to the uterus
oviducts
A ring of muscle at the entrance to the uterus. Tt keeps the baby in place while the woman is pregnant. Who am I?
cervix
Describe the difference between sperm and semen
Sperm is a sex male cell and semen is a mixture of sperm and fluid (nutrient)
An egg cell cannot move by itself. The oviduct is lined with ________________
cilia
What is fertilisation?
The nucleus of the sperm and the nucleus of the egg have to join together.
During intercourse, the male moves his penis backwards and forwards. This stimulates the release of semen into the vagina. This is known as ______________.
ejaculation
What is an embryo?
Fertilised egg divided several times to form a ball of cells
The embryo attaches to the lining of the uterus and begins to develop into a baby. This is called ________________________
implantation
Which is bigger egg cell or sperm cell?
egg cell
State where an unborn baby develops inside its mother
uterus
