This is normal in a foetus as they receive oxygen from the mother via the placenta, however is dangerous in a child or an adult.

What does a hole in the heart allow to happen?

Name 3 advantages of a transplanted heart valve or pacemaker

Name 2 disadvantages of a transplanted heart valve or pacemaker

Name 2 advantages of heaving a heart transplant

Name 3 disadvantages to having a heart transplant

Natures way of preventing you from bleeding to death when injured

This substance starts to build over the wound

A SCAB

Examples of anticoagulant drugs

What is an anticoagulant?

What is Haemophillia?

How many different blood groups are there?

What are the different types of blood groups?

Blood group A can accept blood from...

Blood group B can accept blood from...

Blood group AB can accept blood from...

Blood group O can accept blood from...

What is haemoglobin?

How much blood is taken from a vein in a donors arm?

Unsuccessful blood transfusions can cause...

Give a reason why someone might give blood.