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NU 155 - EXAM 3
100+ (Latest 2026 Edition) 100% Verified Q&A + Answer Key Solutions
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 102 Qs
This document, "NU 155 - Exam 3," covers topics in physiology and pathophysiology, specifically
examining cardiovascular concepts, such as stroke volume, preload, and afterload, as well as various
disease states, including Buerger's disease, inflammatory bowel disease, and hepatitis. The document
provides 102 questions with correct answers and detailed explanations, serving as a study aid for review
and understanding of these concepts. Students can utilize this resource to review key concepts, deepen
their understanding, and prepare for exams.
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
Stroke Volume
CORRECT ANSWER
Amt of blood ejected by ventricle during a contraction
RATIONALE: Stroke Volume refers to the amount of blood ejected by the heart's ventricles during a single contraction.
This specific definition focuses on the ventricles, which are the heart's lower chambers responsible for pumping blood out
to the body, making the term a precise description of this physiological process.
QUESTION 2
What does digoxin do?
CORRECT ANSWER
increases cardiac contractibility
RATIONALE: Digoxin acts as a positive inotropic agent, which means it increases the contractility of cardiac muscle cells
by binding to and stabilizing the cardiac troponin-tropomyosin complex, allowing for more efficient calcium ion release
and subsequent muscle contraction. This effect enhances the heart's ability to pump blood, particularly in patients with
heart failure.
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Preload
CORRECT ANSWER
volume of blood in ventricles at end of diastole
RATIONALE: Preload refers to the initial stretching of the cardiac myocytes prior to contraction, which is directly
influenced by the volume of blood in the ventricles at the end of diastole. This relationship is based on the Frank-Starling
law of the heart, which states that the stroke volume increases in response to an increase in the volume of blood in the
ventricles, stretching the myocytes and thus enhancing contraction.
QUESTION 4
Buerger's disease pt needs to avoid smoking & stimulants? (T/F)
CORRECT ANSWER
True
RATIONALE: Smoking and stimulants are known to exacerbate the symptoms of Buerger's disease, a condition
characterized by inflammation and blockage of blood vessels, and can also accelerate disease progression, making it
essential for patients to avoid these substances to manage their condition effectively. By avoiding smoking and
stimulants, patients with Buerger's disease can help reduce the risk of further complications and improve their overall
health outcomes.
QUESTION 5
After load
CORRECT ANSWER
resistance left ventricle must overcome to circulate blood
RATIONALE: Afterload refers to the pressure the left ventricle must generate to overcome peripheral vascular resistance
and eject blood into the systemic circulation, making "resistance left ventricle must overcome to circulate blood" a
correct description of this concept. This understanding is rooted in the relationship between the left ventricle's
contraction force and the pressure it must overcome to eject blood against the resistance in the peripheral circulation.
QUESTION 6
modifyable risk factors for heart disease
CORRECT ANSWER
-obesity
-sedentary lifestyle
-smoking
-DM
-HTN
RATIONALE: These risk factors are considered modifiable because they can be altered or changed through lifestyle
modifications, such as diet and exercise for obesity and sedentary lifestyle, quitting smoking, managing diabetes (DM)
and hypertension (HTN) through medication or lifestyle changes, thereby reducing the risk of heart disease. Modifiable
risk factors are a key target for preventive measures in healthcare, allowing individuals to take control of their health and
reduce their risk of developing heart disease.
QUESTION 7
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(Latest 2026 Edition) 100% Verified
written by
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ClassMerit
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NU 155 - EXAM 3
100+ (Latest 2026 Edition) 100% Verified Q&A + Answer Key Solutions
100% Guarantee Pass
📋 DOCUMENT OVERVIEW 102 Qs
This document, "NU 155 - Exam 3," covers topics in physiology and pathophysiology, specifically
examining cardiovascular concepts, such as stroke volume, preload, and afterload, as well as various
disease states, including Buerger's disease, inflammatory bowel disease, and hepatitis. The document
provides 102 questions with correct answers and detailed explanations, serving as a study aid for review
and understanding of these concepts. Students can utilize this resource to review key concepts, deepen
their understanding, and prepare for exams.
✓ Verified Answers ✓ Exam Ready ✓ Study Guide
Trusted by thousands of students and professionals worldwide
EXAM QUESTIONS
QUESTION 1
Stroke Volume
CORRECT ANSWER
Amt of blood ejected by ventricle during a contraction
RATIONALE: Stroke Volume refers to the amount of blood ejected by the heart's ventricles during a single contraction.
This specific definition focuses on the ventricles, which are the heart's lower chambers responsible for pumping blood out
to the body, making the term a precise description of this physiological process.
QUESTION 2
What does digoxin do?
CORRECT ANSWER
increases cardiac contractibility
RATIONALE: Digoxin acts as a positive inotropic agent, which means it increases the contractility of cardiac muscle cells
by binding to and stabilizing the cardiac troponin-tropomyosin complex, allowing for more efficient calcium ion release
and subsequent muscle contraction. This effect enhances the heart's ability to pump blood, particularly in patients with
heart failure.
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Preload
CORRECT ANSWER
volume of blood in ventricles at end of diastole
RATIONALE: Preload refers to the initial stretching of the cardiac myocytes prior to contraction, which is directly
influenced by the volume of blood in the ventricles at the end of diastole. This relationship is based on the Frank-Starling
law of the heart, which states that the stroke volume increases in response to an increase in the volume of blood in the
ventricles, stretching the myocytes and thus enhancing contraction.
QUESTION 4
Buerger's disease pt needs to avoid smoking & stimulants? (T/F)
CORRECT ANSWER
True
RATIONALE: Smoking and stimulants are known to exacerbate the symptoms of Buerger's disease, a condition
characterized by inflammation and blockage of blood vessels, and can also accelerate disease progression, making it
essential for patients to avoid these substances to manage their condition effectively. By avoiding smoking and
stimulants, patients with Buerger's disease can help reduce the risk of further complications and improve their overall
health outcomes.
QUESTION 5
After load
CORRECT ANSWER
resistance left ventricle must overcome to circulate blood
RATIONALE: Afterload refers to the pressure the left ventricle must generate to overcome peripheral vascular resistance
and eject blood into the systemic circulation, making "resistance left ventricle must overcome to circulate blood" a
correct description of this concept. This understanding is rooted in the relationship between the left ventricle's
contraction force and the pressure it must overcome to eject blood against the resistance in the peripheral circulation.
QUESTION 6
modifyable risk factors for heart disease
CORRECT ANSWER
-obesity
-sedentary lifestyle
-smoking
-DM
-HTN
RATIONALE: These risk factors are considered modifiable because they can be altered or changed through lifestyle
modifications, such as diet and exercise for obesity and sedentary lifestyle, quitting smoking, managing diabetes (DM)
and hypertension (HTN) through medication or lifestyle changes, thereby reducing the risk of heart disease. Modifiable
risk factors are a key target for preventive measures in healthcare, allowing individuals to take control of their health and
reduce their risk of developing heart disease.
QUESTION 7
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