Human Physiology: Blood Flow and the Control of Blood Pressure QUESTIONS AND ANSWERS GRADED A+

Human Physiology: Blood Flow and the Control of Blood Pressure QUESTIONS AND ANSWERS GRADED A+ 1) A) B) C) D) E) Fainting is also known as eclampsia. vasovagal syncope. infarction. reactive hyperemia. orthostatic hypotension. Answer: B 2) A) B) C) D) Perfusion is blood flow through an organ. the driving force behind blood flow. delivery of oxygen to cells. vessels. movement of blood through a shunt. Answer: A the connection between capillaries and other E) 3) are also known as the pressure reservoir of the cardiovascular system. A) B) C) D) Veins Venules Capillaries Arterioles Art 1/22 E) eries Ans wer: E 4) A) B) C) D) E) The inner lining of blood vessels is called endocardium. endoangium. endothelium. basal lamina. endo statin. Answe r: C 1 2/22 5) A) B) C) D) E) Smooth muscle is present in the walls of veins only. arteries only. muscular arteries only. all vessel types except capillaries. all vessel types. Answer: D 6) A) B) C) D) E) The highly branched contractile cells that regulate capillary permeability are called podocytes. vascular smooth muscle. endothelial cells. pericytes. epitheli ocytes. Answer: D 7) A) B) C) D) Differences between arterioles and metarterioles include the fact that arterioles have a continuous smooth muscle layer in their walls. allow blood to bypass capillary beds. have an endothelial lining. have a continuous smooth muscle layer in their walls and allow blood to bypass capillary beds. 3/22 E) All of the answers are correct. Answer: A 8) The only blood vessels whose walls permit exchange between the blood and the surrounding interstitial fluids are the A) B) C) D) E) arterioles. venules. capillaries. arterioles and capillaries. venules and capillaries. Answer: E 2 4/22 9) Angiogenesis is A) B) C) D) E) an examination of the arteries and veins. having blood drawn into a tube for tests. the growth of new blood vessels. surgical restructuring of the coronary arteries. being able to detect a pulse in arteries. Answer: C 10) A) Angiostatin and endostatin may be useful in the treatment of myocardial infarction. B) C) D) E) hypertension. hypotension. cancer. vasovaga l syncope. Answer: D 11) A) The values obtained when measuring blood pressure, such as 120/80, exactly match the pressures inside the ventricle during systole and diastole. B) C) D) reflect the pressure in the major arteries during ventricular systole and diastole. are the same on both the pulmonary and systemic circuits. exactly match the pressures inside the ventricle during systole and diastole and reflect the pressure in the major arteries during ventricular systole and diastole. 5/22 E) All of the answers are correct. Answer: B 12) A) B) Which of the following is occurring during systole? blood pressure increases pulse pressure decreases C) D) E) more stress is placed on arterial walls blood pressure increases and pulse pressure decreases blood pressure increases and more stress is placed on arterial walls Answer: E 3 6/22 13) A) B) The mean arterial pressure (MAP) is important because it represents the driving pressure for blood flow. it reflects the difference in time that systole lasts compared to diastole. C) D) it forces the practitioner to do math, thus they must pay attention to the values obtained. it represents the driving pressure for blood flow and it reflects the difference in time that systole lasts compared to diastole. E) All of the answers are correct. Answer: A 14) A) Blood flow to a tissue will increase if the level of oxygen at the tissue increases. B) C) D) E) level of carbon dioxide at the tissue increases. pH rises. vessels constrict. All of the answers are correct. Answer: B 15) A) Blood pressure is determined by measuring the size of the pulse pressure. B) C) D) measuring the pressure in the left ventricle. measuring the force exerted by blood in a vessel. measuring the degree of turbulence in a closed vessel. All of the 7/22 E) answers are correct. Answer: C 16) A) B) The difference between the systolic and diastolic pressures is called the systemic pressure. mean arterial pressure. C) D) E) pulse pressure. blood pressure. circulator y pressure. Answer: C 4 . 8/22 17) A) B) All of the following would cause an increase in blood pressure EXCEPT an increase in arterial resistance. C) D) a decrease in arterial diameter. a decrease in cardiac output. sympathetic stimulation. Answer: C 18) The vessels that are the main site of variable resistance in the circulatory system, and that contribute more than 60% of the total resistance, are the A) B) C) D) E) muscular arteries. elastic arteries. arterioles. venules. vein s. Ans wer: C