the heart Flashcards
What is the function of a pacemaker?
A group of cells in the right atrium that produces electrical impulses for the contraction of muscle cells
What are the 4 main chambers?
Top: Right atrium, left atrium
Bottom: Right ventricle, left ventricle
What type of blood does the right side of the blood have?
Deoxygenated
What is the type of blood that the left side of the heart have?
Oxygenated
What does the aorta do?
The aorta carries oxygenated blood from the heart to the rest of the body
What does the pulmonary vein do?
Carries oxygenated blood from lungs to the heart
What does the left ventricle do?
Pumps oxygenated blood to the rest of the body
What does the left atrium do?
Carries blood to the left ventricle from the lungs
What is the broken down version of the process of blood circulation
Blood enters the atrium
The aorta contracts forcing blood into ventricles
The ventricles contract forcing blood into the arteries
Blood flows through arteries to the organs and returns to the heart via veins
Why is the left ventricle muscle wall thicker than the right ventricle wall?
The left ventricle wall is thicker than the right because the left ventricle wall pushes blood around the body
Why are there valves in the heart?
To prevent blood flowing backwards
Why might some people need a pacemaker?
Their heart has an irregular heartbeat or doesn’t contract impulsively therefore they need a pacemaker to help their heart to contract
What does the pulmonary artery do?
Carries deoxygenated blood from the heart to the lungs
Tip:
The right side of the paper is the left side of the heart and the left side of the paper is the right side of the heart
Tip:
Right side is deoxygenated and the left side is oxygenated
