Intro to Cardiogenetics Flashcards
When someone ahs anemia with 100% saturation, what is the issue that still must be considered?
- likely still not enough oxygen
- due to decreased amount of RBCs/hemoglobin
What is cardiac output?
the amount of blood the heart can pump out over a given unit of time
must be adjustable based on the needs of the body
What determines cardiac output?
What are the associated equations?
rate of contraction of the heart
What makes up 1 cardiac cycle?
What is diastole?
relaxing of the muscular walls of the heart to allow for filling of a chamber
relaxation/filling
What is systole?
contraction of the chamber wall muscle of the heart leading to ejection of blood
contraction/ejection
Diastole followed by systole contitutes waht is called a ?
cardiac cycle
Define heart rate
HR = # of cardiac cycles/minute
What ensures one-way flow of blodo through the various cardiac chambers?
cardiac valves
What are the muscles strands that holds each of the valves in elastic tension?
papillary muscles
The atreoventricular junctions (there are 2) each have a corresponding valve. What are these called and where are they located?
ensure one way flow of blood
- tricuspid valve is on the right side
- mitral valve is on the left side
The 2 ventricular outflow tracts each have a valve to ensure the one-way flow of blood. What are these called and where are they located?
- pulomary valve on the right side (R ventricle takes deoxygenated blodo to the lungs via the pulmonary arteries)
- aortic valve on the left side (left ventricle takes oxygenated blodo to the body via the aorta)
EKG
Contraction of the atria = depolarizaiton of atrial muscle
Which wave is this assocaited with?
P wave
Which EKG wave is assocaited with contraction of the ventricles?
R wave
