Podcast
Questions and Answers
Which type of dysfunction is characterized by impaired cardiac contractility?
Which type of dysfunction is characterized by impaired cardiac contractility?
- Diastolic dysfunction
- Left ventricular dysfunction
- Right ventricular dysfunction
- Systolic dysfunction (correct)
What is the main determinant of pre-load?
What is the main determinant of pre-load?
- Ventricular wall tension
- Excessive afterload
- Vascular resistance
- Venous return (correct)
What is the force that the contracting heart must generate to eject blood from the heart called?
What is the force that the contracting heart must generate to eject blood from the heart called?
- Pre-load
- Ventricular wall tension
- Afterload (correct)
- Vascular resistance
Which component of afterload may impair ventricular ejection and increase wall tension?
Which component of afterload may impair ventricular ejection and increase wall tension?
What is the term for the ability of the myocardium to contract?
What is the term for the ability of the myocardium to contract?
Which ion influences myocardial contractility by opening L-type channels facilitated by cAMP?
Which ion influences myocardial contractility by opening L-type channels facilitated by cAMP?
Which ion exchange is indirectly inhibited by cardiac glycosides, leading to increased contractility?
Which ion exchange is indirectly inhibited by cardiac glycosides, leading to increased contractility?
Which NYHA class of heart failure is characterized by marked limitation of physical activity?
Which NYHA class of heart failure is characterized by marked limitation of physical activity?
Which NYHA class of heart failure is characterized by no limitation of physical activity?
Which NYHA class of heart failure is characterized by no limitation of physical activity?
Which type of dysfunction is characterized by a decrease in ejection fraction?
Which type of dysfunction is characterized by a decrease in ejection fraction?
Which of the following is true about capillary hydrostatic pressure?
Which of the following is true about capillary hydrostatic pressure?
Which of the following is responsible for drawing fluid into the capillaries?
Which of the following is responsible for drawing fluid into the capillaries?
Which system is important in controlling the concentration of proteins in interstitial fluids and the volume of interstitial fluid?
Which system is important in controlling the concentration of proteins in interstitial fluids and the volume of interstitial fluid?
What is the range of pressure in the systemic venous circulation?
What is the range of pressure in the systemic venous circulation?
What effect does sympathetic innervation of veins have on venous return to the heart?
What effect does sympathetic innervation of veins have on venous return to the heart?
Which of the following is true about the effect of decreased alveolar O2 on local alveolar blood flow in the lungs?
Which of the following is true about the effect of decreased alveolar O2 on local alveolar blood flow in the lungs?
What are the major routes across capillary membranes for the movement of fluids, solutes, and larger molecules/proteins?
What are the major routes across capillary membranes for the movement of fluids, solutes, and larger molecules/proteins?
What is the importance of the lymphatic system in fluid homeostasis and net transcapillary movement of water across capillary beds?
What is the importance of the lymphatic system in fluid homeostasis and net transcapillary movement of water across capillary beds?
What are the factors that affect venous return and consequently determine cardiac output and blood pressure?
What are the factors that affect venous return and consequently determine cardiac output and blood pressure?
What is the term for the net movement of nutrients, oxygen, and metabolic end products through capillary membranes?
What is the term for the net movement of nutrients, oxygen, and metabolic end products through capillary membranes?
Which artery supplies blood to the walls of the right atrium and right ventricle?
Which artery supplies blood to the walls of the right atrium and right ventricle?
Which of the following is the primary controller of coronary blood flow?
Which of the following is the primary controller of coronary blood flow?
What is the main determinant of preload?
What is the main determinant of preload?
Which ion influences myocardial contractility by opening L-type channels facilitated by cAMP?
Which ion influences myocardial contractility by opening L-type channels facilitated by cAMP?
What effect does sympathetic innervation of veins have on venous return to the heart?
What effect does sympathetic innervation of veins have on venous return to the heart?
During strenuous exercise, the work output of the heart increases by 6-9 times. What percentage of coronary blood flow does the heart use during strenuous exercise?
During strenuous exercise, the work output of the heart increases by 6-9 times. What percentage of coronary blood flow does the heart use during strenuous exercise?
Which of the following is responsible for vasoconstriction of skeletal muscle arterioles during sympathetic stimulation?
Which of the following is responsible for vasoconstriction of skeletal muscle arterioles during sympathetic stimulation?
What is the main factor that determines venous return to the heart?
What is the main factor that determines venous return to the heart?
Which of the following is true about the effect of sympathetic innervation on venous return to the heart?
Which of the following is true about the effect of sympathetic innervation on venous return to the heart?
What is the term for the ability of the myocardium to contract?
What is the term for the ability of the myocardium to contract?
