Advanced Cardiovascular Hemodynamics: Right Atrium Pressure, Cardiac Output Distribution, Blood Viscosity, Erythrocyte Count, Precapillary Sphincters, Capillary Filtration, Transcytosis of Insulin, Sinusoid Diffusion of Plasma Proteins, Venous Blood Volum

Advanced Cardiovascular Hemodynamics: Right Atrium Pressure, Cardiac Output Distribution, Blood Viscosity, Erythrocyte Count, Precapillary Sphincters, Capillary Filtration, Transcytosis of Insulin, Sinusoid Diffusion of Plasma Proteins, Venous Blood Volume, Vasoconstriction in Muscular Arteries, Elastic vs Muscular Artery Function, Vascular Resistance, Polycythemia Effects, Edema Mechanisms, Histamine-Induced Vasodilation, Respiratory Pump, Pulmonary Arteriolar Constriction, Tissue Perfusion, Interstitial Fluid Dynamics, Hydrostatic and Osmotic Pressures Exam Questions Verified and Complete with A+ Graded Rationales Latest Updated 2026 As blood flows into the right atrium, the pressure has dropped to about 0 mmHg. Which of the following receives the largest percentage of the cardiac output at rest? Digestive organs and liver Which of the following substances can cross capillaries by transcytosis? Insulin A change in number of erythrocytes would most directly affect which factor determining blood flow through a vessel? Blood viscosity In which of the following would contraction of smooth muscle have the greatest effect on exchanges between the blood and a specific tissue? Precapillary sphincters Which of the following represents net filtration pressure? (capillary hydrostatic pressure + interstitial fluid colloid osmotic pressure) - (interstitial fluid hydrostatic pressure + plasma colloid osmotic pressure) The respiratory pump moves lymphatic fluid by which mechanism? A decrease in pressure in the thoracic cavity. Which of the following substances can diffuse across only sinusoid capillaries and not other capillaries? Plasma proteins If your total blood volume is 5 liters, about how much blood is in your veins and venules at rest? 3.2 L Which of the following would generate the most powerful vasoconstriction? Muscular arteries Which of the following is true when comparing elastic arteries with muscular arteries? Elastic arteries have a larger overall diameter than muscular arteries. A patient developed polycythemia (more than the usual number of erythrocytes). Which of the following factors affecting blood flow would be most directly affected? Blood viscosity The individual who would most likely experience the biggest increase in vascular resistance would be Dan, who gained 5 lb of body fat. All of the following are likely causes of edema EXCEPT decrease in concentration of plasma proteins. increased permeability of capillaries. increase in reabsorption in capillaries. increase in plasma hyd