Flashcards in Intro to cardiac cycle Deck (26)
The right heart supplies blood to the systemic circuit and the left heart supplies blood to the pulmonary circuit. True or false?
False - right -> pulmonary, left -> systemic
What are the four major systemic arteries?
What are the two major systemic veins?
Vena cava (inferior and superior)
What are the vessel types in order of blood flow?
Arteries -> arterioles -> pre-capillary sphincter -> capillary -> venule -> vein
What are the four valves of the heart?
Right AV (tricuspid)
Left AV (bicuspid)
Pulmonary semilunar (right)
Aortic semilunar (left)
What is the difference between the superior vena cava and inferior vena cava?
Superior carries blood from all parts of the body above the diaphragm
Inferior carries blood from all parts below diaphragm
Pulmonary arteries are only arteries that carry deoxygenated blood. True or false?
Pulmonary veins are the only veins that carry oxygenated blood. True or false?
Blood flows through systemic circuit first and then flows through pulmonary circuit. True or false?
False - blood flows through both simultaneously
After contraction, there is a point at which the atria and ventricles are empty. True or false?
False - never fully empty
Why is arterial pressure always high, even during diastole?
Because after contraction, there is still some blood left in atria so aortic valve closes to prevent backflow from arteries into ventricles. Pressure is high as blood remains contained.
What is meant by end diastolic volume?
The volume of blood in ventricle at diastole (after filling) - max vol in cardiac cycle
What is meant by end systolic volume?
The volume of blood in ventricle at systole (after emptying) - lowest vol in cardiac cycle
Where is the mitral (bicuspid) valve located?
Between the left atrium and left ventricle
During ventricular systole, the mitral valve opens. True or false?
False - closes to prevent blood going from ventricles to atrium (and pulmonary vein)
Where is the aortic valve located?
Between the left ventricle and aorta
Systolic BP is the same as ventricular pressure. True or false?
Diastolic BP is the same as diastolic LV pressure. True or false?
With each heartbeat, the left and right ventricles contract together. True or false?
What is the equation for cardiac output?
CO = HR x SV
What is stroke volume?
The volume of blood pumped from each ventricle, with every beat
What is the typical value for SV?
What is the typical heart rate value?
What is normal BP classed as?
<130 / <85 mmHg
What is optimal BP classed as?
<120 / <80 mmHg