The Heart (including problems) Flashcards
What type of blood flows through the vena cava and into the right atrium?
deoxygenated blood
When blood flows through the Right ventricle and out through the pulmonary artery where does the deoxygenated blood go?
The deoxygenated blood go to the lungs to pick up oxygen and then the blood with is oxygenated goes back to the heart
When oxygenated blood is formed what happens to that blood?
The blood goes through the pulmonary vein into the left atrium through the left ventricle and out of the aorta
Where is oxygenated blood pumped to?
The blood is pumped to other organs through the arteries and returns through the veins
How does the heart get its own oxygenated blood?
It has it own arteries called the coronary arteries which branch of the aorta and surround the heart
How does the heart have a natural pacemaker?
It has a group of cells in the right atrium which make electrical impulses to make the heart contract.
Why are artificial pacemakers made?
If people have an irregular heart beat it makes electrical impulses
Why would an artificial heart be needed?
If a patient has heart failure
What is an artificial heart?
A mechanical device that pumps blood for a person whose heart has failed
What are the advantages of using an artificial heat?
Less likely to be rejected by the immune system because of the metals and plastics unlike a donors heart
What are the disadvantages of using an artificial heart?
surgery can lead to bleeding and infection. The heart can wear out. The electrical motor can fail. The blood doesn’t flow nicely. Has to take blood thinning drugs which can cause problems when hurt.
Why would you need a mechanical or biological valve?
to replace damaged or leaky valves ( valves which make blood flow in both directions)
Disadvantages of replacement of valves
there can still be problems with blood clots
give an example of artificial blood
saline
Why would artificial blood be needed?
if someone has lost a lot of blood (in a car accident)
