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BIO 669 Exam 2 Questions And Answers | 2024 Updated Solutions | 100% Correct Answers
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BIO 669 Exam 2 Questions And Answers | 2024 UpdatedSolutions | 100% Correct Answers
Thromboangiitis obliterans (Buergers disease) is an autoimmune condition that is:
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a. A result of over activation of the intrinsic and extrinsic clotting system systemically
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b. Characterized by attacks of vasospasm in the small arteries and arterioles of the fing
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ers and toes 1 1
c. Strongly associated with smoking
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d. Associated with janeway lesions and Oslers Nodes -
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correct answer c. Strongly associated with smoking
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Which of the following is not a systemic disease that is associated with Raynaud's Phen
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omenon?
a. Congestive heart failure
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b. Collagen vascular diseases such as scleroderma
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c. Pulmonary hypertension
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d. Myxedema or smoking - correct answer a. Congestive Heart Failure
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Which of the following is NOT a primary factor in determining preload?
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a. Venous return during diastole
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b. End systolic volume
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c. Total peripheral (systemic) resistance
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d. All of the above are primary factors of preload -
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correct answer c. Total peripheral (systemic) resistance
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Which of the following statements are INCORRECT
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a. The mean arterial pressure is the average force of pushing blood through the systemi
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c circuit.
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b. The pulse pressure is the difference between systolic and diastolic pressures
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c. A decrease in aortic compliance increases its stiffness and thus can lead to an increa
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se in pulse pressures
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,d. Prostacyclins, which are diminished by NSAIDs, are vasoconstrictors. -
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correct answer d. Prostacyclins, which are diminished by NSAIDS, are vasoconstrictor
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s
Which of the following is incorrect regarding the isometric contraction phase of the cardi
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ac cycle?
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a. Blood does not flow through the heart at this time.
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b. The atria are contracting
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c. The valves are closed
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d. It occurs during ventricular systole - correct answer b. The atria are contracting
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The resistance of movement of blood from the left ventricle to the aorta is termed the:
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a. Ejection fraction
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b. Compliance
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c. Preload
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d. Afterload - correct answer d. Afterload
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Natriuretic peptides act by: 1 1 1
a. Stimulates secretion of Na+ (and thus decreases urine volume) from the kidneys
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b. Stimulated the release of Na+ (thus increases urine volume) from the kidneys
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c. Increases vascular smooth muscle contraction (vasoconstriction)
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d. Stimulates increased heart rate, contractility, and cardiac output -
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correct answer b. Stimulate the release of Na+ (thus increasing urine volume) from the
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kidneys
The double layered serous membrane surrounding the heart that functions to minimize
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friction from the heart movement is the:
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A. Myocardium
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B. Endocardium
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C. Peritoneum
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D. Pericardium - correct answer D. Pericardium
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Prinzmetal angina is: 1 1
, a. A transient ischemia of the myocardium that occurs unpredictably
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b. Myocardial ischemia that may not cause detectable symptoms
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c. Ischemia that occurs after a predictable amount of exercise
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d. The rupture of an unstable plaque -
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correct answer a. A transient ischemia of the myocardium that occurs unpredictably
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Progressive venous distension of the head and upper extremities resulting from growth
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of a cancerous tumor on the right mainstem bronchus is best described clinically by:
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A. Deep vein thrombosis
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B. Spinal shock
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C. Superior vena cava syndrome
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D. Carcinoid syndrome - correct answer C. Superior Vena Cava Syndrome
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The most common cause of aneurysm is:
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A. External Hematoma
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B. Atherosclerosis with hypertension
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C. Genetics
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D. Congestive heart failure - correct answer B. Atherosclerosis with hypertension
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An atherosclerotic area that has ruptured is termed a:
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A. Fibrous plaque
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B. Complicated plaque
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C. Fatty streak
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D. Aneurysm - correct answer B. Complicated plaque
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The PR Interval represents the time from:
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A. The onset of atrial systole to the completion of atrial diastole
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B. The onset of atrial systole to the onset of ventricular diastole
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C. The onset of atrial systole to the onset of ventricular diastole
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