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NU 325 Exam 3 Questions and Correct
Answers/ Latest Update / Already Graded
Precordium
Ans: area on anterior chest overlying the heart & great vessels;
immediately in front of heart
Pericardium
Ans: tough, fibrous double-walled sac that surrounds &
protects heart; contains a few mL of serous pericardial fluid;
adherent to great vessels, esophagus, sternum & pleura, is
anchored to diaphragm
Pericardial sac
Ans: surrounds heart; contains pericardial fluid that allows for
smooth, friction-free movement of heart
Myocardium
Ans: muscular middle wall of heart that does the pumping
Endocardium
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Ans: layer of endothelial tissue that lines inner surface of heart
chambers & valves
Mediastinum
Ans: area between the lungs containing the heart, aorta, venae
cavae, esophagus, and trachea in the middle third of thoracic
cage
How heart sits in chest cavity
Ans: - rotated so R side is ant. and L side is mostly post.
- Base: top, left sternal border 2nd ICS
- Apex: bottom, 5th ICS mid-clavicular
Artrioventricular valves
Ans: - R: Tricuspid
- L: Mitral (Bicuspid)
- Open during filling (diastole)
- Closed during pumping (systole) to prevent regurg. of blood
into atria
Semilunar valves
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Ans: - R: Pulmonic
- L: Aortic
- between ventricles & arteries
- Open during pumping (systole)
Diastole
Ans: ventricles relax & fill with blood; 2/3 of cardiac cycle
Systole
Ans: contraction; blood pumped from ventricles & fill
pulmonary and systemic arteries
Apical pulse
Ans: - found at apex of heart, 5th ICS mid-clavicular line on L
side
- ask pt to exhale & hold, palpate with finger pad
Sequence of assessing heart
Ans: 1. Inspect
2. Palpate
3. Percuss
All rights reserved © 2025/ 2026 |
NU 325 Exam 3 Questions and Correct
Answers/ Latest Update / Already Graded
Precordium
Ans: area on anterior chest overlying the heart & great vessels;
immediately in front of heart
Pericardium
Ans: tough, fibrous double-walled sac that surrounds &
protects heart; contains a few mL of serous pericardial fluid;
adherent to great vessels, esophagus, sternum & pleura, is
anchored to diaphragm
Pericardial sac
Ans: surrounds heart; contains pericardial fluid that allows for
smooth, friction-free movement of heart
Myocardium
Ans: muscular middle wall of heart that does the pumping
Endocardium
All rights reserved © 2025/ 2026 |
, Page |2
Ans: layer of endothelial tissue that lines inner surface of heart
chambers & valves
Mediastinum
Ans: area between the lungs containing the heart, aorta, venae
cavae, esophagus, and trachea in the middle third of thoracic
cage
How heart sits in chest cavity
Ans: - rotated so R side is ant. and L side is mostly post.
- Base: top, left sternal border 2nd ICS
- Apex: bottom, 5th ICS mid-clavicular
Artrioventricular valves
Ans: - R: Tricuspid
- L: Mitral (Bicuspid)
- Open during filling (diastole)
- Closed during pumping (systole) to prevent regurg. of blood
into atria
Semilunar valves
All rights reserved © 2025/ 2026 |
, Page |3
Ans: - R: Pulmonic
- L: Aortic
- between ventricles & arteries
- Open during pumping (systole)
Diastole
Ans: ventricles relax & fill with blood; 2/3 of cardiac cycle
Systole
Ans: contraction; blood pumped from ventricles & fill
pulmonary and systemic arteries
Apical pulse
Ans: - found at apex of heart, 5th ICS mid-clavicular line on L
side
- ask pt to exhale & hold, palpate with finger pad
Sequence of assessing heart
Ans: 1. Inspect
2. Palpate
3. Percuss
All rights reserved © 2025/ 2026 |
