20 Questions
What is the main variable governing fluid movement in the cardiovascular system?
Pressure
During which phase of the cardiac cycle do the AV valves open and blood flows into the ventricles?
Ventricular filling
What causes the heart sound known as 'Lubb (S1)'?
AV valve opening
What happens during isovolumetric relaxation in the cardiac cycle?
AV valves close
What occurs when the ventricular pressure exceeds arterial pressure during the cardiac cycle?
AV valves open
During the cardiac cycle, when does the aortic valve open and the tricuspid valve close?
During ventricular systole
If the left ventricle fails to contract properly, what would be the immediate effect on blood flow?
Decreased blood flow to the body
Which of the following statements correctly describes the relationship between blood pressure and blood flow in the heart?
Lower pressure in the right ventricle leads to increased blood flow from the lungs
During which phase of the cardiac cycle does the aortic valve close and the mitral valve open?
Ventricular diastole
What is the primary driving force behind the movement of blood through the heart?
Pressure gradients
What is the main effect of atrial fibrillation on the heart?
Causes chaotic depolarizations in the atria
During which phase of the cardiac cycle does ventricular repolarization primarily occur?
T wave
What defines the P-Q Interval in relation to the cardiac cycle?
Ventricular filling
In a cardiac cycle, what does the S-T Segment signify?
Ventricular emptying
How does heart block differ from premature ventricular contraction (PVC)?
Heart block results from stress, while PVC is due to degeneration of conduction system.
Which of the following statements accurately describes the relationship between blood pressure and cardiac output?
Blood pressure and cardiac output are directly proportional
During which phase of the cardiac cycle does ventricular contraction occur?
Ventricular systole
What is the primary function of the pericardial fluid within the pericardial cavity?
To lubricate the heart and reduce friction during contractions
Which of the following statements accurately describes the flow of blood through the heart?
Blood flows from the vena cavae to the right atrium, right ventricle, pulmonary artery, lungs, left atrium, left ventricle, and out through the aorta
According to the principles of pressure and flow, what happens to the blood flow in a vessel if the pressure gradient across the vessel increases?
The blood flow increases
Learn about the principles of pressure and flow in the context of heart sounds production and blood pressure basics. Explore the relationship between pressure, fluid flow, and resistance in understanding how blood pressure is measured and its importance in the cardiovascular system.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
