3.19b F1 x F1 Cross

3.19a P1 x P1 Cross

3.18b Genotypes

3.18a Phenotypes

2.2-2.4 Cells

3 9b Female Reproductive System

3 9b Female Reproductive System

Recall the structure and function of the male and female reproductive systems

3.9a Male reproductive system

3.9a Male reproductive system

Recall the structure and function of the male and female reproductive systems

3.11 Placenta

3.11 Placenta

Describe the role of the placenta in the nutrition of the developing embryo

3.12 Amniotic fluid

3.12 Amniotic fluid

Understand how the developing embryo is protected by amniotic fluid

Surrounding the space of the embryo in the uterus is a fluid known as the amniotic fluid.

Its main function is to protect the embryo from any damage; the fluid also supports the foetus as it cannot bear its own weight as their bones are not calcified (hard)

The amniotic fluid is mostly made up of water which cannot be compressed. If the uterus experiences any blows or forces (e.g. the mother hits something), it will absorb the pressure and prevents any damage to the unborn child (acts like a shock absorber).

For example to experience this, one can be in a swimming pool and try to kick their foot out. They will see that their foot moves slightly slower, and it is harder to move.