Podcast
Questions and Answers
What is the primary function of the coronary arteries?
What is the primary function of the coronary arteries?
- To pump blood throughout the body
- To regulate blood pressure
- To facilitate the exchange of oxygen and carbon dioxide
- To carry blood to oxygenate/nourish the heart muscle (correct)
What is the most common pathological change that leads to coronary heart disease?
What is the most common pathological change that leads to coronary heart disease?
- Vasospasm
- Atherosclerosis (correct)
- Disruption of atherosclerotic plaque
- Thrombosis
What is the result of impaired blood flow in the coronary arteries?
What is the result of impaired blood flow in the coronary arteries?
- Hypertension
- Heart failure
- Ischemia or infarction of heart muscle cells (correct)
- Cardiac arrhythmia
What is the characteristic of angina that distinguishes it from infarction?
What is the characteristic of angina that distinguishes it from infarction?
What is the term for the chest pain that occurs due to a discrepancy between the supply and demand of oxygenated blood to the heart muscle?
What is the term for the chest pain that occurs due to a discrepancy between the supply and demand of oxygenated blood to the heart muscle?
What determines which areas of the heart will be damaged in a heart attack?
What determines which areas of the heart will be damaged in a heart attack?
What is the difference between chronic ischemic heart disease and acute ischemic heart disease?
What is the difference between chronic ischemic heart disease and acute ischemic heart disease?
What is the primary predisposing factor for coronary heart disease?
What is the primary predisposing factor for coronary heart disease?
What is the characteristic of unstable angina in terms of exertion?
What is the characteristic of unstable angina in terms of exertion?
What is the primary difference between unstable angina and acute myocardial infarction?
What is the primary difference between unstable angina and acute myocardial infarction?
What is the consequence of a plaque rupture in unstable angina?
What is the consequence of a plaque rupture in unstable angina?
What is the treatment approach for unstable angina in the beginning?
What is the treatment approach for unstable angina in the beginning?
What is the outcome if unstable angina does not respond to treatment?
What is the outcome if unstable angina does not respond to treatment?
What is the primary driving force for blood flow in the human body?
What is the primary driving force for blood flow in the human body?
What is the characteristic of acute coronary syndrome?
What is the characteristic of acute coronary syndrome?
Which of the following factors does not directly affect cardiac output?
Which of the following factors does not directly affect cardiac output?
What is the outcome of unstable angina if the clot breaks down and blood flow is restored?
What is the outcome of unstable angina if the clot breaks down and blood flow is restored?
What is the characteristic of coronary heart disease?
What is the characteristic of coronary heart disease?
What is the main factor that determines peripheral vascular resistance?
What is the main factor that determines peripheral vascular resistance?
Which control mechanism is involved in regulating blood volume and vessel diameter, but not heart rate?
Which control mechanism is involved in regulating blood volume and vessel diameter, but not heart rate?
What is the equation that relates blood pressure to cardiac output and peripheral vascular resistance?
What is the equation that relates blood pressure to cardiac output and peripheral vascular resistance?
Which of the following centers is involved in parasympathetic-mediated decrease in heart rate?
Which of the following centers is involved in parasympathetic-mediated decrease in heart rate?
What is the term that refers to the amount of blood pumped out by the heart per minute?
What is the term that refers to the amount of blood pumped out by the heart per minute?
Which nervous system component receives input from other areas of the nervous system, such as the hypothalamus, and from arterial baroreceptors and chemoreceptors?
Which nervous system component receives input from other areas of the nervous system, such as the hypothalamus, and from arterial baroreceptors and chemoreceptors?
What is the force of pressure that the heart must generate to eject blood from the heart determined by?
What is the force of pressure that the heart must generate to eject blood from the heart determined by?
What is the primary factor that determines cardiac output?
What is the primary factor that determines cardiac output?
What is the term for the force with which ventricles pump, independent of effects of preload and afterload?
What is the term for the force with which ventricles pump, independent of effects of preload and afterload?
What is an example of a positive inotrope?
What is an example of a positive inotrope?
What happens to cardiac output when heart rate increases beyond a certain point?
What happens to cardiac output when heart rate increases beyond a certain point?
What is the primary determinant of stroke volume?
What is the primary determinant of stroke volume?
What is a consequence of a decrease in cardiac output?
What is a consequence of a decrease in cardiac output?
What is a requirement for blood flow through vessels?
What is a requirement for blood flow through vessels?
What is the optimal ventricular volume for maximum force of contraction?
What is the optimal ventricular volume for maximum force of contraction?
What is the result of a heart attack on the heart muscle?
What is the result of a heart attack on the heart muscle?
What is the name of the mechanism that describes how preload affects stroke volume?
What is the name of the mechanism that describes how preload affects stroke volume?
What is the term for the amount of blood in the ventricle ready to be pumped out with each beat?
What is the term for the amount of blood in the ventricle ready to be pumped out with each beat?
What is affected by the interaction of actin and myosin fibers?
What is affected by the interaction of actin and myosin fibers?
What is an example of a negative inotrope?
What is an example of a negative inotrope?
What is the term for the amount of blood pumped out with each beat?
What is the term for the amount of blood pumped out with each beat?
What is the primary factor that determines heart rate?
What is the primary factor that determines heart rate?