BIO 669 EVALUATION TEST ANSWERS AND
QUESTIONS SET A+
✔✔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 - ✔✔D. 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 - ✔✔A. 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 - ✔✔A. 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
D. Blood pressure readings consistently greater than 140/90 mmHg - ✔✔B. Rapidly
progressive hypertension with a diastolic pressure of 140 mmHg or more
✔✔Intermittent claudication is:
A. Caused by coronary artery disease
B. A sign of peripheral artery disease
C. An attack of vasospasm brought on by the cold
D. A result of peripheral neuropathy - ✔✔B. A sign of peripheral artery disease
✔✔Stroke volume:
A. Does not affect the cardiac index
B. Is equal to ESV - EDV
C. Does not vary much
D. None of the above are true - ✔✔D. None of the above are true
✔✔A T wave relates to ______ and shortly precedes the closure of the _____ valves.
A. Ventricular depolarization, AV
B. Ventricular depolarization, SL
C. Ventricular repolarization, AV
D. Ventricular repolarization, SL
E. None of the above - ✔✔D. Ventricular repolarization, SL
✔✔How much of the oxygen carried by hemoglobin in the blood is actually transferred
to the myocardium?
, A. 10-20%
B. 40-50%
C. 70-75%
D. 100% - ✔✔C. 70-75%
✔✔The key regulator determining if a muscle, such as cardiac muscle, contracts or not
is the presence of:
A. Ca++
B. ATP
C. K+
D. Epinephrine - ✔✔A. Ca++
✔✔Myocardial hibernation is best described as:
A. Myocardial cells that are persistently ischemic and undergo metabolic adaptation to
prolong survival
B. Hypertrophy that occurs with loss of contractile function
C. Temporary loss of contractile function that persists for hours to days after restoration
of perfusion
D. Fibroblast proliferation and severe inflammatory response - ✔✔A. Myocardial cells
that are persistently ischemic and undergo metabolic adaptation to prolong survival
✔✔A thrombus is a blood clot that remains attached to a vessel wall. Which of the
following is NOT one of the main factors as proposed by Virchow?
A. Obesity
B. Venous Stasis
C. Venous Endothelial damage
D. Hypercoagulable states - ✔✔A. Obesity
QUESTIONS SET A+
✔✔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 - ✔✔D. 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 - ✔✔A. 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 - ✔✔A. 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
D. Blood pressure readings consistently greater than 140/90 mmHg - ✔✔B. Rapidly
progressive hypertension with a diastolic pressure of 140 mmHg or more
✔✔Intermittent claudication is:
A. Caused by coronary artery disease
B. A sign of peripheral artery disease
C. An attack of vasospasm brought on by the cold
D. A result of peripheral neuropathy - ✔✔B. A sign of peripheral artery disease
✔✔Stroke volume:
A. Does not affect the cardiac index
B. Is equal to ESV - EDV
C. Does not vary much
D. None of the above are true - ✔✔D. None of the above are true
✔✔A T wave relates to ______ and shortly precedes the closure of the _____ valves.
A. Ventricular depolarization, AV
B. Ventricular depolarization, SL
C. Ventricular repolarization, AV
D. Ventricular repolarization, SL
E. None of the above - ✔✔D. Ventricular repolarization, SL
✔✔How much of the oxygen carried by hemoglobin in the blood is actually transferred
to the myocardium?
, A. 10-20%
B. 40-50%
C. 70-75%
D. 100% - ✔✔C. 70-75%
✔✔The key regulator determining if a muscle, such as cardiac muscle, contracts or not
is the presence of:
A. Ca++
B. ATP
C. K+
D. Epinephrine - ✔✔A. Ca++
✔✔Myocardial hibernation is best described as:
A. Myocardial cells that are persistently ischemic and undergo metabolic adaptation to
prolong survival
B. Hypertrophy that occurs with loss of contractile function
C. Temporary loss of contractile function that persists for hours to days after restoration
of perfusion
D. Fibroblast proliferation and severe inflammatory response - ✔✔A. Myocardial cells
that are persistently ischemic and undergo metabolic adaptation to prolong survival
✔✔A thrombus is a blood clot that remains attached to a vessel wall. Which of the
following is NOT one of the main factors as proposed by Virchow?
A. Obesity
B. Venous Stasis
C. Venous Endothelial damage
D. Hypercoagulable states - ✔✔A. Obesity
