4. Coronary artery disease occurs when: the body's oxygen supply exceeds demand the body's oxygen demand exceeds supply the body's glucose supply exceeds demand the body's water demand exceeds supply
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Multiple Choice: 1. The three major determinants of myocardial oxygen demand (MVO2) include each of the following except: a. Diastolic pressure b. Heart rate c. Left ventricular contractility d. Systolic pressure Fill in the Blank: 2. _____ is the most important factor in myocardial oxygen demand. As this increases, myocardial oxygen consumption or demand also increases. Multiple Choice: 3. What is the most common cause of cardiogenic shock? a. Heart failure b. Cardiomyopathy c. Myocardial infarction d. Hypertension Multiple Choice: 4. Which does NOT occur during cardiogenic shock? a. Decreased cardiac output b. Hypotension c. Hypoperfusion d. Decreased systemic vascular resistance.
Adi S.
B) release CO2 and take up O2. C) increase in size to accommodate the reuptake of O2. D) take up CO2 and release O2. 87) The location of the heart's pacemaker is a specialized region of cardiac muscle called the A) sinoatrial node. B) atrioventricular node. C) left ventricle. D) right atrium. 88) In mammals, which of the following vessels transports oxygenated blood from the lung back to the heart? A) pulmonary vein B) coronary artery C) superior vena cava D) pulmonary artery 89) Myocardial infarction, also called a heart attack, A) is caused by excessive blood pressure in the heart. B) is unrelated to cigarette smoking. C) is the damage or death of cardiac muscle tissue. D) actually causes no permanent damage to the heart. 90) Which blood vessels have the thinnest walls? A) capillaries B) venules C) veins D) arterioles 91) In which of the following human blood vessels is the blood pressure lowest? A) arterioles in the legs B) veins in the head C) arteries in the head D) capillaries in the feet 92) Which kind of vessel has the lowest blood velocity? A) venule B) vein C) capillary D) artery 93) Which of the following factors contributes to the flow of blood in veins? A) skeletal muscle contractions B) the diameter of capillaries C) blood pressure generated by the heart D) the number of red blood cells in venous blood 94) In humans, which blood vessels have valves? A) capillaries B) veins C) arteries in the neck D) arterioles 95) As blood moves away from the heart toward the tissues, the relative size of blood vessels _________ the blood pressure _________, and the velocity of blood flow _________. A) decreases; decreases; decreases B) decreases; decreases; increases C) decreases; increases; increases D) increases; decreases; decreases 96) Which of the following is the cause of more than half of all deaths in the United States? A) cancer B) cardiovascular disease C) diabetes D) flu
Sri K.
Which of the following occur within a muscle cell during oxygen deficit? Place a check mark by the correct choices. 49. Decreased ATP 50. Increased ATP 51. Increased lactic acid. 52. Decreased oxygen 53. Increased oxygen 54. Decreased carbon dioxide 55. Increased carbon dioxide 56. Increased glucose
Madhur L.
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