cardio Flashcards
What are the basic functions of the Cardiovascular system?
Deliver oxygen, nutrients and hormones to different part of the body.
What is systole?
When the chambers are contracting and pumping out blood.
What is diastole?
When the chambers are relaxed and fill with blood coming in.
What does the parasympathetic NS do?
Slows down the heartrate, creating bradycardia
What does the sympathetic NS do?
Increases the heart rate, creating tachycardia
What is the cardiac pacemaker of the heart and where is it located?
The SA node and its located in the right atrium.
What is the syncytium?
A mass or group of heart muscle cells together.
What is cardiac output?
The amount of blood that the heart is capable of pumping per minute. Calculated by multiplying the heart rate by the stroke volume.
What is the stroke volume?
Determined by the preload and the afterload, or the amount of blood being pumped out from the left ventricle into the body.
What is preload?
The amount of blood that fills the ventricle during diastole.
What is the afterload?
The arterial resistance that the ventricle must pump against.
Name in order how the blood flows starting from the vena cava until the aorta.
Vena cava, Right Atrium, Tricuspid valve, Right ventricle, pulmonary artery, lungs to get oxygen, pulmonary vein, left atrium, mitral valve, left ventricle, out through the aorta.
What does the compensatory mechanism do?
Increases heartrate, increases stroke volume, increases efficiency of heart muscle, and causes cardiac remodeling.
What diseases occurs when the tricuspid valve is damaged?
Ascites, also where HW lives after becoming very large and leaking in from the pulmonary artery.
What occurs if the mitral valve is damaged?
A pulmonary edema may occur because blood backs up back into the pulmonary vein when it cannot pass the mitral valve.
