Reproduction Flashcards
Types of fertilisation
Internal and external
Humans and amphibians
What is needed to form a baby what are these cells called which one comes from the male and female
Sperm cell- male
Egg cell- female
they are called sex cells
Fertilisation occurs in the
Oviduct
A fertilised egg turns into an embryo by
Cell division
The loss of blood and the uterus lining in the menstrual cycle is called
Menstruation
The developing baby gets food and oxygen from
The placenta
Puberty is caused by
Sex hormones
An egg cell is larger than a sperm cell because
If contains a store of food that can be used if fertilised
One way that a sperm cell is adapted to its job
It has a tail to swim
The organ that produces sperm
Testies
The organ that produces the egg
Ovaries
In humans normal pretences last for ………….. Months
9
After the baby is born the…………… Connecting the mother to the foetus is cut
Umbilical cord
What is the puberty
When teens change into adults
What is sexual intercourse.
When a male becomes aroused during mating and his penis becomes hard . His pens is then moved back and forth in the women’s vagina which allows the release of the sperm from the testises. The sperm goes into the females tuberous into one of the oviducts in the sperm fertilise an ovum (egg) only one sperm will reach the egg membrane.
