GCSE BIOLOGY 3

respiring cells produce oxygen

respiring cells produce glucose that is transported to the

amino acids are transported from the

urea is transported from the

respiring cells produce carbon dioxide that is transported to the

what are the walls of the heart made of

what are the 4 sections of the heart called

what are the chambers at the top of the heart called

what are the chambers at the bottom of the heart called

what are the blood vessels that carry blood away from the heart called

what are the blood vessels that carry blood towards the heart called

what are the structures called that are inside the heart and and prevent blood flowing backwards

the events that happen as blood flows into and out of the heart are called the

1) in the cardiac cycle , deoxygenated blood returns from the body in a blood vessel called the

2) the blood enters the chamber of the heart called the

3) the right atrium contracts and the blood moves through a valve into the chamber called the

4) the right ventricle contracts and the blood is pushed out of the heart and into a blood vessel called the

5) this blood vessel carries the blood to the

6) the blood returns to the heart in a blood vessel called the

7) the oxygenated blood enters the chamber of the heart called

8) the left atrium contracts and the blood moves through a valve into the chamber called the

9) the left ventricle contracts and the blood is pushed out of the heart and into a blood vessel called the

10) this is the end of the cardiac cycle . in the cardiac cycle blood is pumped to the lungs so that it can become

the left ventricle has the thickest walls of any chamber in the heart , as the blood from this chamber has to be pumped

what are the blood vessels on the surface of the heart called

what is the function of the coronary arteries

what happens if one of the blood vessels becomes blocked 

explain the cardiac cycle