BIO 669 Exam 2 Questions and Answers/Latest /100% Correct.

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