The Heart Flashcards
On a piece of paper, a heart diagram would be ____?
Flipped
How many chambers of the heart do we have?
4
What are the chambers called?
Left atrium, left ventricle, right atrium and right ventricle
Name three blood vessels?
Artery, vein and capillary
Where does the right side of the heart pump blood to?
The lungs
Where does the left side of the heart pump blood to?
The rest of the body
What supplies blood to the heart?
Coronary arteries
Why is the left side thicker ?
It is because of the pressure it needs to pump blood to the rest of the body?
Do arteries pump blood away or to the heart?
Away
The walls of an artery are thick. What is it made out of and why is this?
It is made out of muscle and elastic fibres and this is so that it helps pump blood and also contracts and bounces back in order to adjust.
If lumen is small , blood is carried at a ____ ________
High pressure
If lumen is large, then blood is carried at a ___ _______
Low pressure
Place the walls of an atery vein and capillary in order of thickness
Artery vein capillary
What do veins have that arteries and capillaries don’t?
Valves
What do valves do?
They prevent the back flow of blood
There are 4 things you will see in blood. What are they?
Plasma
Platelets
Red blood cells
White blood cells
What is plasma and its function?
It is the liquid part of blood and it carries everything that needs to be transported
How thick are the walls of capillaries?
They are 1 cell thick which is permeable
What are capillaries meant to do?
They carry blood and oxygen and take in co2 and gives the blood to the veins.
Capillaries have a high _________________ but carry blood at a low _________
Surface area , pressure
