Podcast
Questions and Answers
What is the main function of the cardiovascular system?
What is the main function of the cardiovascular system?
- Sensory perception
- Transportation of gases, nutrients, and waste (correct)
- Respiration
- Digestion
Where are the papillary muscles located in the heart?
Where are the papillary muscles located in the heart?
- In the myocardium
- In the ventricles (correct)
- In the atria
- In the coronary arteries
Which layer of the heart covers the outer surface of the heart?
Which layer of the heart covers the outer surface of the heart?
- Endocardium
- Myocardium
- Epicardium (correct)
- Intercalated discs
Which blood vessel carries oxygenated blood away from the heart?
Which blood vessel carries oxygenated blood away from the heart?
Which artery supplies blood to the anterior part of the heart?
Which artery supplies blood to the anterior part of the heart?
What is the main function of pacemaker cells in the heart?
What is the main function of pacemaker cells in the heart?
Which term is used to describe chest pain that occurs due to reduced blood flow to the heart muscle?
Which term is used to describe chest pain that occurs due to reduced blood flow to the heart muscle?
What is the main characteristic of cardiac myocytes?
What is the main characteristic of cardiac myocytes?
What is the main function of the sarcoplasmic reticulum?
What is the main function of the sarcoplasmic reticulum?
Where does the majority of calcium come from during muscle contraction?
Where does the majority of calcium come from during muscle contraction?
What precedes ventricular ejection in the cardiac cycle?
What precedes ventricular ejection in the cardiac cycle?
Which phase involves all heart chambers in a state of relaxation?
Which phase involves all heart chambers in a state of relaxation?
What part of the heart initiates the cardiac electrical impulse?
What part of the heart initiates the cardiac electrical impulse?
Which structure is responsible for conducting the electrical signal from the atria to the ventricles?
Which structure is responsible for conducting the electrical signal from the atria to the ventricles?
What is the main function of the U wave in an electrocardiogram?
What is the main function of the U wave in an electrocardiogram?
What is the formula to calculate Stroke Volume?
What is the formula to calculate Stroke Volume?
Which factor affects Stroke Volume by altering the length of muscle fibers?
Which factor affects Stroke Volume by altering the length of muscle fibers?
What is the effect of increased contractility on Stroke Volume?
What is the effect of increased contractility on Stroke Volume?
Which factor influences Stroke Volume by controlling Heart Rate?
Which factor influences Stroke Volume by controlling Heart Rate?
In the embryology of the heart, what structure forms the 4 chambers?
In the embryology of the heart, what structure forms the 4 chambers?
Which condition is associated with Tachycardia?
Which condition is associated with Tachycardia?
'Foramen Ovale' is an adaptation in the fetal heart that is associated with:
'Foramen Ovale' is an adaptation in the fetal heart that is associated with:
'Catecholamines (NE & Epi) act on which type of receptors to influence Stroke Volume?'
'Catecholamines (NE & Epi) act on which type of receptors to influence Stroke Volume?'
During muscle contraction, what triggers the release of calcium from the sarcoplasmic reticulum?
During muscle contraction, what triggers the release of calcium from the sarcoplasmic reticulum?
In the cardiac cycle, what occurs during ventricular ejection phase?
In the cardiac cycle, what occurs during ventricular ejection phase?
Which part of the heart is responsible for conducting the electrical signal from the atria to the ventricles?
Which part of the heart is responsible for conducting the electrical signal from the atria to the ventricles?
What is the function of the cardioaccelerator center located in the medulla oblongata?
What is the function of the cardioaccelerator center located in the medulla oblongata?
Which phase of the cardiac cycle involves all heart chambers in a state of relaxation?
Which phase of the cardiac cycle involves all heart chambers in a state of relaxation?
What percentage of extracellular calcium enters cardiac cells through slow calcium channels?
What percentage of extracellular calcium enters cardiac cells through slow calcium channels?
What is the initial event that leads to atrial depolarization in the cardiac cycle?
What is the initial event that leads to atrial depolarization in the cardiac cycle?
What structure in the heart is known for its autorhythmicity and unstable resting potential?
What structure in the heart is known for its autorhythmicity and unstable resting potential?
What is the formula for Cardiac Output?
What is the formula for Cardiac Output?
Which factor affects Stroke Volume by altering contractility?
Which factor affects Stroke Volume by altering contractility?
What refers to the volume of blood in the ventricles at the end of diastole?
What refers to the volume of blood in the ventricles at the end of diastole?
Which condition is NOT associated with factors influencing Stroke Volume?
Which condition is NOT associated with factors influencing Stroke Volume?
Which hormone decreases calcium permeability in the heart muscle cells?
Which hormone decreases calcium permeability in the heart muscle cells?
What phase of the cardiac cycle involves both atrial and ventricular relaxation?
What phase of the cardiac cycle involves both atrial and ventricular relaxation?
What factor affects Stroke Volume by regulating the length of muscle fibers in the heart?
What factor affects Stroke Volume by regulating the length of muscle fibers in the heart?
Which structure plays a role in fetal heart adaptations by diverting blood away from the pulmonary circulation?
Which structure plays a role in fetal heart adaptations by diverting blood away from the pulmonary circulation?
Which structure is responsible for preventing backflow of blood from the left ventricle to the left atrium?
Which structure is responsible for preventing backflow of blood from the left ventricle to the left atrium?
What is the primary function of the chordae tendineae in the heart?
What is the primary function of the chordae tendineae in the heart?
In which layer of the heart wall are the coronary arteries located?
In which layer of the heart wall are the coronary arteries located?
Which artery supplies blood to the right atrium and right ventricle of the heart?
Which artery supplies blood to the right atrium and right ventricle of the heart?
What term refers to chest pain or discomfort caused by an insufficient blood supply to the heart muscle?
What term refers to chest pain or discomfort caused by an insufficient blood supply to the heart muscle?
Which of the following best describes the function of intercalated discs in cardiac myocytes?
Which of the following best describes the function of intercalated discs in cardiac myocytes?
What is the primary role of cardiac myocytes in the cardiovascular system?
What is the primary role of cardiac myocytes in the cardiovascular system?
During the cardiac cycle, what immediately follows atrial depolarization?
During the cardiac cycle, what immediately follows atrial depolarization?
What percentage of extracellular calcium enters cardiac cells through slow calcium channels?
What percentage of extracellular calcium enters cardiac cells through slow calcium channels?
Which structure plays a role in fetal heart adaptations by diverting blood away from the pulmonary circulation?
Which structure plays a role in fetal heart adaptations by diverting blood away from the pulmonary circulation?
What is the primary factor affecting Stroke Volume by regulating contractility?
What is the primary factor affecting Stroke Volume by regulating contractility?
What is the primary function of the chordae tendineae in the heart?
What is the primary function of the chordae tendineae in the heart?
Which structure plays a role in fetal heart adaptations by diverting blood away from the pulmonary circulation?
Which structure plays a role in fetal heart adaptations by diverting blood away from the pulmonary circulation?
Which factor influences Stroke Volume by controlling Heart Rate?
Which factor influences Stroke Volume by controlling Heart Rate?
Where does the majority of calcium come from during muscle contraction?
Where does the majority of calcium come from during muscle contraction?
What is the primary characteristic of cardiac myocytes?
What is the primary characteristic of cardiac myocytes?
What is the main characteristic of Noncontractile cardiac Cells?
What is the main characteristic of Noncontractile cardiac Cells?
Which hormone decreases calcium permeability in heart muscle cells?
Which hormone decreases calcium permeability in heart muscle cells?
What is the effect of increased contractility on Stroke Volume?
What is the effect of increased contractility on Stroke Volume?
'Pacemaker potential' refers to:
'Pacemaker potential' refers to:
What occurs during the ventricular ejection phase of the cardiac cycle?
What occurs during the ventricular ejection phase of the cardiac cycle?
'Foramen Ovale' is an adaptation in the fetal heart that allows blood to flow between which two structures?
'Foramen Ovale' is an adaptation in the fetal heart that allows blood to flow between which two structures?
What is the main function of the chordae tendineae in the heart?
What is the main function of the chordae tendineae in the heart?
Where are the papillary muscles located in the heart?
Where are the papillary muscles located in the heart?
Which factor influences Stroke Volume by controlling Heart Rate?
Which factor influences Stroke Volume by controlling Heart Rate?
What phase of the cardiac cycle involves both atrial and ventricular contraction?
What phase of the cardiac cycle involves both atrial and ventricular contraction?
Where does the majority of calcium come from during muscle contraction?
Where does the majority of calcium come from during muscle contraction?
Which term describes a condition characterized by an imbalance between oxygen supply and demand in the heart muscle?
Which term describes a condition characterized by an imbalance between oxygen supply and demand in the heart muscle?
