BIO 669 Exam 2 Questions And Answers |
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Answers
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 - Correct answerc. 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 - Correct answera. 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 - Correct answerc. 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. - Correct
answerd. 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 - Correct answerb. 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 - Correct answerd. 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 - Correct
answerb. 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 - Correct answerD. 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 - Correct answera. 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 - Correct answerC. Superior Vena Cava Syndrome
The most common cause of aneurysm is:
A. External Hematoma
B. Atherosclerosis with hypertension
C. Genetics
D. Congestive heart failure - Correct answerB. Atherosclerosis with hypertension
An atherosclerotic area that has ruptured is termed a:
A. Fibrous plaque
B. Complicated plaque
C. Fatty streak
, D. Aneurysm - Correct answerB. Complicated plaque
The PR Interval represents the time from:
A. The onset of atrial systole to the completion of atrial diastole
B. The onset of atrial systole to the onset of ventricular diastole
C. The onset of atrial systole to the onset of ventricular diastole
D. The onset of atrial systole to the onset of ventricular systole - Correct answerD.
The onset of atrial systole to the onset of ventricular systole
The circumflex artery off of the left coronary artery:
A. Left atrium and ventricle
B. The two atria
C. The two ventricles
D. The aorta and the pulmonary artery - Correct answerA. Left atrium and ventricle
The structures that connect the leaflets/cusps and help to prevent prolapse of the AV
valves is the:
A. Chordae tendineae and papillary muscles
B. Cardiomyocytes
C. Interventricular septum
D. Coronary ostia - Correct answerA. Chordae tendineae and papillary muscles
Hypertensive crisis (malignant hypertension) is best defined as:
A. An advancing failure of systemic circulation as the heart weakens
B. Rapidly progressive hypertension with a diastolic pressure of 140 mmHg or more
C. A pulse pressure of greater than 60
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