Things To Remember About The Heart

Question 1

What does the valve between the atria and the ventricles do

Answer 1

These ensure the blood flows in one direction only

Question 2

What do the valves at the point where blood leaves the ventricles do

Answer 2

These stop blood flowing back into the heart between heart beats. It is the closing of these valves that cause the heart sounds

Question 3

What ventricle has the thickest wall and why

Answer 3

The left ventricle has the thickest wall as it has to generate enough pressure to pump the blood the greatest distance.The right ventricle wall is thinner as it only pumps blood to the lungs (these are close to the heart)

Question 4

What is the plural of atrium

Answer 4

ATRIA (NOT ATRIUMS)

Question 5

What types of walls do atria have and why

Answer 5

Atria have thin walls as they don’t pump blood any great distance.

Question 6

What is the valve between the right atrium and ventricle called

Answer 6

The tricuspid valve

Question 7

What is the valve between the left atrium and ventricle called

Answer 7

The bicuspid valve

Question 8

How do heart beats work

Answer 8

Blood enters the atria from a vein
Blood is forced into the ventricles through the valves
The ventricles then contract forcing the blood upwards
Blood exits the heart via an artery