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BIO 669 EXAM 3 ACTUAL EXAM 2 VERSIONS 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
Which of the following effects does the renin angiotensin
aldosterone system (RAAS) NOT directly affect in the
development of hypertension?
A. Salt, water and increased vascular resistance
B. Endothelial dysfunction, insulin resistance, and platelet
aggregation
C. Arteriolar remodeling making the increase vascular resistance
permanent
D. Increase in heart rate and stroke volume, thus increasing
cardiac output -ANSWERS-D. Increase in heart rate and stroke
volume, thus increase in cardiac output
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Myocardial stunning refers to the:
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 -
ANSWERS-C. Temporary loss of contractile function that persists
for hours to days after restoration of perfusion
Identify the correct path of blood through the heart and lungs:
A. Vena cava → L Atrium → Tricuspid valve → L ventricle →
Pulmonary artery→ Pulmonary vein → R atrium → Mitral valve →
R Ventricle
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B. Vena Cava → Right atrium → Tricuspid valve → Right ventricle
→ Pulmonary vein → Pulmonary artery → Left Atrium → Mitral
valve → Left Ventricle → Aorta
C. Vena Cava → R Atrium → Tricuspid valve → Right ventricle →
Pulmonary artery-Pulmonary vein → L Atrium → Mitral valve → L
Ventricle → Aorta
D. Vena Cava → R atrium → Mitral valve → R Ventricle →
Pulmonary artery → Pulmonary vein → L atrium → Tricuspid
valve → L Ventricle → Aorta -ANSWERS-C. Vena Cava -> R
Atrium -> Tricuspid Valve -> R ventricle -> Pulmonary Artery ->
Pulmonary vein -> L Atrium -> Mitral valve -> L ventricle -> Aorta
The innermost layer of the heart wall (inner lining layer) is the:
A. Epicardium
B. Myocardium
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C. Endocardium
D. Pericardium -ANSWERS-C. Endocardium
Which of the following is most likely to increase ejection fraction?
A. Sympathetic nervous system activation
B. Parasympathetic nervous system activation
C. An acute MI affecting the left ventricle
D. Increased afterload -ANSWERS-A. Sympathetic nervous
system activation
The volume/pressure inside the ventricle at the end of diastole is
termed the:
A. Ejection fraction
BIO 669 EXAM 3 ACTUAL EXAM 2 VERSIONS 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
Which of the following effects does the renin angiotensin
aldosterone system (RAAS) NOT directly affect in the
development of hypertension?
A. Salt, water and increased vascular resistance
B. Endothelial dysfunction, insulin resistance, and platelet
aggregation
C. Arteriolar remodeling making the increase vascular resistance
permanent
D. Increase in heart rate and stroke volume, thus increasing
cardiac output -ANSWERS-D. Increase in heart rate and stroke
volume, thus increase in cardiac output
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Myocardial stunning refers to the:
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 -
ANSWERS-C. Temporary loss of contractile function that persists
for hours to days after restoration of perfusion
Identify the correct path of blood through the heart and lungs:
A. Vena cava → L Atrium → Tricuspid valve → L ventricle →
Pulmonary artery→ Pulmonary vein → R atrium → Mitral valve →
R Ventricle
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B. Vena Cava → Right atrium → Tricuspid valve → Right ventricle
→ Pulmonary vein → Pulmonary artery → Left Atrium → Mitral
valve → Left Ventricle → Aorta
C. Vena Cava → R Atrium → Tricuspid valve → Right ventricle →
Pulmonary artery-Pulmonary vein → L Atrium → Mitral valve → L
Ventricle → Aorta
D. Vena Cava → R atrium → Mitral valve → R Ventricle →
Pulmonary artery → Pulmonary vein → L atrium → Tricuspid
valve → L Ventricle → Aorta -ANSWERS-C. Vena Cava -> R
Atrium -> Tricuspid Valve -> R ventricle -> Pulmonary Artery ->
Pulmonary vein -> L Atrium -> Mitral valve -> L ventricle -> Aorta
The innermost layer of the heart wall (inner lining layer) is the:
A. Epicardium
B. Myocardium
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C. Endocardium
D. Pericardium -ANSWERS-C. Endocardium
Which of the following is most likely to increase ejection fraction?
A. Sympathetic nervous system activation
B. Parasympathetic nervous system activation
C. An acute MI affecting the left ventricle
D. Increased afterload -ANSWERS-A. Sympathetic nervous
system activation
The volume/pressure inside the ventricle at the end of diastole is
termed the:
A. Ejection fraction
