NUR2020 Exam 1 Questions And
100% Correct Answers
perfusion - Answer the body's ability to circulate a continuous supply of blood
throughout the body
S1 (3) - Answer systole
closure of AV vales
ventricular contraction
S2 (3) - Answer diastole
closure of semilunar vales
ventricular relaxation
cardiac output is determined by - Answer stroke volume X heart rate
what is known as the pacemaker of the heart? - Answer SA node
layers of the heart wall (3) - Answer 1. epicardium - outer layer
2. myocardium - thick, muscular layer
3. endocardium - innermost later
murmurs - Answer harsh, blowing sounds caused by disruption of blood flow into the
heart, between the chambers, or into the vascular system
pericardium - Answer thick, strong, double-layered membrane that encases the heart
pericardium serves to - Answer protect and anchor the heart to surrounding tissues
two layers of pericardium - Answer visceral and parietal
serous fluid - Answer fluid inside the pericardial cavity that allows smooth movement of
the pericardial layers and the heart during contraction
what prevents the heart from overfilling with blood? - Answer snug encasement of the
pericardium
the right atrium receives blood from - Answer superior vena cava, inferior vena cava,
and coronary sinus
Artery that carries deoxygenated blood - Answer pulmonary artery
, what kind of system is the right side of the heart and what purpose does it serve? -
Answer low-pressure; protects the pulmonary capillary bed
what kind of system is the left side of the heart and what purpose does it serve? -
Answer high-pressure; provides adequate pressure to support blood flow
splitting of S2 - Answer may occur toward the end of inspiration because of a slight
difference in how long the semilunar valves take to close
t-dub sound - Answer split sound that can occur due to aortic valve closing slightly
earlier than pulmonic valve
S2 splitting is considered normal when - Answer the splitting is is from an increase in
intrathoracic pressure during inspiration
S3 - Answer Ventricular gallop; happens when blood flow into the ventricles as the AV
valves open causes vibrations during diastole
S3 may be heard in - Answer children, young adults, or pregnant women during 3rd
trimester
S4 - Answer atrial gallop; atrial contraction and ejection of blood into the ventricles in
late diastole
S4 may be heard in - Answer children, well-conditioned athletes, and healthy older
adults without cardiac disease
S3 and S4 are often normal, but may be associated with - Answer myocardial infarction
or heart failure
interpretation of heart sounds is based on - Answer pitch, duration, intensity, phase, and
location on the precordium
auscultation site for SI - Answer apex; use diaphragm of stethoscope; unaffected by
position
auscultation site for S2 - Answer 2nd ICS; pulmonary component heard best at left
sternal border; aortic component heard best at right sternal border; diaphragm of
stethoscope; sitting/supine
auscultation site for S3 - Answer apex with bell of stethoscope; left lateral position or
supine
auscultation site for S4 - Answer apex with bell of stethoscope; lest lateral position or
supine
S1 pitch - Answer high
S2 pitch - Answer high
100% Correct Answers
perfusion - Answer the body's ability to circulate a continuous supply of blood
throughout the body
S1 (3) - Answer systole
closure of AV vales
ventricular contraction
S2 (3) - Answer diastole
closure of semilunar vales
ventricular relaxation
cardiac output is determined by - Answer stroke volume X heart rate
what is known as the pacemaker of the heart? - Answer SA node
layers of the heart wall (3) - Answer 1. epicardium - outer layer
2. myocardium - thick, muscular layer
3. endocardium - innermost later
murmurs - Answer harsh, blowing sounds caused by disruption of blood flow into the
heart, between the chambers, or into the vascular system
pericardium - Answer thick, strong, double-layered membrane that encases the heart
pericardium serves to - Answer protect and anchor the heart to surrounding tissues
two layers of pericardium - Answer visceral and parietal
serous fluid - Answer fluid inside the pericardial cavity that allows smooth movement of
the pericardial layers and the heart during contraction
what prevents the heart from overfilling with blood? - Answer snug encasement of the
pericardium
the right atrium receives blood from - Answer superior vena cava, inferior vena cava,
and coronary sinus
Artery that carries deoxygenated blood - Answer pulmonary artery
, what kind of system is the right side of the heart and what purpose does it serve? -
Answer low-pressure; protects the pulmonary capillary bed
what kind of system is the left side of the heart and what purpose does it serve? -
Answer high-pressure; provides adequate pressure to support blood flow
splitting of S2 - Answer may occur toward the end of inspiration because of a slight
difference in how long the semilunar valves take to close
t-dub sound - Answer split sound that can occur due to aortic valve closing slightly
earlier than pulmonic valve
S2 splitting is considered normal when - Answer the splitting is is from an increase in
intrathoracic pressure during inspiration
S3 - Answer Ventricular gallop; happens when blood flow into the ventricles as the AV
valves open causes vibrations during diastole
S3 may be heard in - Answer children, young adults, or pregnant women during 3rd
trimester
S4 - Answer atrial gallop; atrial contraction and ejection of blood into the ventricles in
late diastole
S4 may be heard in - Answer children, well-conditioned athletes, and healthy older
adults without cardiac disease
S3 and S4 are often normal, but may be associated with - Answer myocardial infarction
or heart failure
interpretation of heart sounds is based on - Answer pitch, duration, intensity, phase, and
location on the precordium
auscultation site for SI - Answer apex; use diaphragm of stethoscope; unaffected by
position
auscultation site for S2 - Answer 2nd ICS; pulmonary component heard best at left
sternal border; aortic component heard best at right sternal border; diaphragm of
stethoscope; sitting/supine
auscultation site for S3 - Answer apex with bell of stethoscope; left lateral position or
supine
auscultation site for S4 - Answer apex with bell of stethoscope; lest lateral position or
supine
S1 pitch - Answer high
S2 pitch - Answer high
