Podcast
Questions and Answers
What is considered a normal heart rate range?
What is considered a normal heart rate range?
- Between 60 – 100 bpm (correct)
- Between 100 – 120 bpm
- Between 40 – 60 bpm
- Between 120 – 140 bpm
What division of the autonomic nervous system increases the heart rate?
What division of the autonomic nervous system increases the heart rate?
- Central nervous system
- Parasympathetic division
- Peripheral nervous system
- Sympathetic division (correct)
What is the function of the AV node in the heart?
What is the function of the AV node in the heart?
- To provide a delay in the signal, allowing the atria to fully contract (correct)
- To contract the atria
- To generate impulses for the SA node
- To pump blood to the ventricles
What is the result if the SA and AV nodes fail?
What is the result if the SA and AV nodes fail?
What is the purpose of the Bundle of His?
What is the purpose of the Bundle of His?
What is the result of the signal from the AV node travelling down the Bundle of His and into the left bundle branch first?
What is the result of the signal from the AV node travelling down the Bundle of His and into the left bundle branch first?
What is the primary function of the heart?
What is the primary function of the heart?
What is the function of the tricuspid valve?
What is the function of the tricuspid valve?
What is the SA node responsible for?
What is the SA node responsible for?
What is the path of deoxygenated blood in the heart?
What is the path of deoxygenated blood in the heart?
What is the term for the heart's ability to produce its own impulses?
What is the term for the heart's ability to produce its own impulses?
What is the function of the pulmonary artery?
What is the function of the pulmonary artery?
What percentage of the cardiac output does the coronary artery supply to the myocardium?
What percentage of the cardiac output does the coronary artery supply to the myocardium?
Which of the following structures does the right coronary artery supply blood to?
Which of the following structures does the right coronary artery supply blood to?
What is the origin of the left coronary artery?
What is the origin of the left coronary artery?
What is the function of the coronary arteries in the cardiac system?
What is the function of the coronary arteries in the cardiac system?
What are the two main coronary arteries that arise from the aortic sinus?
What are the two main coronary arteries that arise from the aortic sinus?
What are the subendocardial arteries part of?
What are the subendocardial arteries part of?
What is the primary characteristic of coronary artery disease (CAD)?
What is the primary characteristic of coronary artery disease (CAD)?
At what level of stenosis does critical stenosis occur in coronary artery disease?
At what level of stenosis does critical stenosis occur in coronary artery disease?
What is the effect of hypertension on the coronary arteries?
What is the effect of hypertension on the coronary arteries?
What is the driving force that moves blood from the aortic root to the myocardial capillaries?
What is the driving force that moves blood from the aortic root to the myocardial capillaries?
What is the term for the phenomenon where blood flow is diverted from a stenotic region to a less stenotic region?
What is the term for the phenomenon where blood flow is diverted from a stenotic region to a less stenotic region?
What is the main determinant of coronary blood flow?
What is the main determinant of coronary blood flow?
What is the effect of heart failure on coronary perfusion pressure?
What is the effect of heart failure on coronary perfusion pressure?
What is the purpose of the coronary blood flow reserve?
What is the purpose of the coronary blood flow reserve?
What is the result of sympathetic-mediated systemic vasoconstriction in heart failure?
What is the result of sympathetic-mediated systemic vasoconstriction in heart failure?
What is the anatomical structure of the coronary circulation?
What is the anatomical structure of the coronary circulation?
What is the main consequence of a reduction in blood flow to the heart muscle?
What is the main consequence of a reduction in blood flow to the heart muscle?
What is the primary function of the coronary circulation?
What is the primary function of the coronary circulation?
What is the term for the condition in which the heart muscle does not receive enough oxygen-rich blood?
What is the term for the condition in which the heart muscle does not receive enough oxygen-rich blood?
What is the purpose of the coronary arteries?
What is the purpose of the coronary arteries?
What is the result of a narrowing or blockage of the coronary arteries?
What is the result of a narrowing or blockage of the coronary arteries?
What is the role of the capillaries in the coronary circulation?
What is the role of the capillaries in the coronary circulation?
What is the main consequence of reduced myocardial perfusion in ischemic heart disease?
What is the main consequence of reduced myocardial perfusion in ischemic heart disease?
What is the purpose of collateral circulation in the heart?
What is the purpose of collateral circulation in the heart?
Which coronary artery supplies blood to the left ventricle and part of the septum?
Which coronary artery supplies blood to the left ventricle and part of the septum?
What is the role of coronary arteries in the heart?
What is the role of coronary arteries in the heart?
What is the clinical significance of understanding coronary circulation, myocardial perfusion, collateral circulation, and coronary arteries?
What is the clinical significance of understanding coronary circulation, myocardial perfusion, collateral circulation, and coronary arteries?
What is the primary risk factor for disrupting the coronary blood supply?
What is the primary risk factor for disrupting the coronary blood supply?
