B4.3 The Heart

Question 1

What does the heart consist of?

Answer 1

Four chambers with thick muscular walls surrounding it and veins and arteries coming in and out

Question 2

What’s the key point to remember when looking at the heart?

Answer 2

You put the right side on the left and the left side in the right
Basically invert it

Question 3

What are the top chambers called

Answer 3

Atria with each one being called an Atrium

Question 4

What are the bottom chambers called

Answer 4

Ventricles with individual ones called ventricle

Question 5

What are the two veins coming into the heart ?

Answer 5

Vena cava on the LHS of the page when looking at the heart
Pulmonary vein on the RHS of the page when looking at the heart

Question 6

Where does the oxygenated blood come from?

Answer 6

The pulmonary vein as it’s coming back from the lungs

Question 7

What do pacemaker cells do?

Answer 7

Produce small electrical impulses which causes the heart to contract

Question 8

How does the heart get its supply of oxygenated blood?

Answer 8

Small arteries branching of the Aorta called coronary arteries which supply the muscle tissue of the heart with oxygen and nutrients

Question 9

What an easy way of remembering the structures of the heart ? Think Atria and ventricles

Answer 9

A over V
This is because the atrium are above the ventricles in the heart