Podcast
Questions and Answers
What is the function of the atria in the heart?
What is the function of the atria in the heart?
- Attach the great veins and arteries at the base of the heart
- Produce lubricating fluid in the pericardial cavity
- Collect blood and push it into the lower chambers (correct)
- Pump blood out to the body or lungs
Where is the epicardium located in the heart?
Where is the epicardium located in the heart?
- Attached at the base of the heart
- Most superficial layer (correct)
- Middle thickest layer
- Between the parietal and visceral layers of the pericardium
Which vessel is responsible for carrying deoxygenated blood in the heart?
Which vessel is responsible for carrying deoxygenated blood in the heart?
- Pulmonary artery (correct)
- Aorta
- Superior vena cava
- Pulmonary vein
What volume of fluid does the heart pump per minute?
What volume of fluid does the heart pump per minute?
What is the size of a typical heart compared to?
What is the size of a typical heart compared to?
Where are fat-filled grooves called sulci located in the heart?
Where are fat-filled grooves called sulci located in the heart?
What happens at 0mV in the heart's action potential?
What happens at 0mV in the heart's action potential?
What is the purpose of the long refractory period in the heart?
What is the purpose of the long refractory period in the heart?
What would happen if the SA node fired 100 times per minute?
What would happen if the SA node fired 100 times per minute?
Which part of the heart's conduction system fires at the slowest rate?
Which part of the heart's conduction system fires at the slowest rate?
What is the purpose of using electrodes in an ECG?
What is the purpose of using electrodes in an ECG?
What is the purpose of artificial pacemakers?
What is the purpose of artificial pacemakers?
During which phase of the cardiac cycle does systole occur?
During which phase of the cardiac cycle does systole occur?
What is the main function of an AED (Automated External Defibrillator)?
What is the main function of an AED (Automated External Defibrillator)?
Which part of the heart undergoes repolarization during the T wave?
Which part of the heart undergoes repolarization during the T wave?
What happens during ventricular diastole?
What happens during ventricular diastole?
Which phase of the cardiac cycle marks the end of ventricular relaxation?
Which phase of the cardiac cycle marks the end of ventricular relaxation?
Which heart sound is heard when the semilunar valves close?
Which heart sound is heard when the semilunar valves close?
What does an S4 heart sound indicate?
What does an S4 heart sound indicate?
What does the ejection fraction measure?
What does the ejection fraction measure?
What is the formula for calculating cardiac output?
What is the formula for calculating cardiac output?
What effect does exercise have on stroke volume?
What effect does exercise have on stroke volume?
Which nerve dominates the autonomic tone of the heart?
Which nerve dominates the autonomic tone of the heart?
What happens when there is an increase in thyroid hormone levels?
What happens when there is an increase in thyroid hormone levels?
Which substances can decrease heart rate?
Which substances can decrease heart rate?
How does increased filling time affect stroke volume?
How does increased filling time affect stroke volume?
What is the main function of endothelins released by the endothelium?
What is the main function of endothelins released by the endothelium?
Which structure divides the heart into chambers?
Which structure divides the heart into chambers?
Where does the left atrium receive blood from?
Where does the left atrium receive blood from?
Which valve separates the left atrium from the left ventricle?
Which valve separates the left atrium from the left ventricle?
What is the main function of the moderator band in the heart?
What is the main function of the moderator band in the heart?
What is the purpose of anastomosis in coronary circulation?
What is the purpose of anastomosis in coronary circulation?
Which type of cells initiate and propagate the action potential through the heart?
Which type of cells initiate and propagate the action potential through the heart?
