nurs 1014 midterm 2 Questions And Answers 100%Solved Already Pssed!!!A+GRADED
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nurs 1014 midterm 2 Questions And Answers 100%Solved Already Pssed!!!A+GRADED
Heart position - correct answer...right side is anterior and left side is posterior
Pericardium - correct answer...tough, fibrous, double-walled sac that surrounds and protects the heart. It also provides smooth fri...
nurs 1014 midterm 2 Questions And
Answers 100%Solved Already
Pssed!!!A+GRADED
Heart position - correct answer...✔✔right side is anterior and left side is posterior
Pericardium - correct answer...✔✔tough, fibrous, double-walled sac that surrounds and
protects the heart. It also provides smooth friction-free movement of the heart muscle
Myocardium - correct answer...✔✔muscular of the heart, does the pumping
Endocardium - correct answer...✔✔the thin layer of endothelial tissue that lines the
inner surface of the heart chambers and valves
Atrioventricular (AV) valves - correct answer...✔✔separate atria and ventricles,
tricuspid on the right, mitral on the left
Semilunar valves - correct answer...✔✔pulmonic valve on the right side and aortic on
the left
Direction of bloodflow - correct answer...✔✔-enters via inferior/superior vena cava -
right atrium -tricuspid valve -right ventricle -pulmonic valve -pulmonary artery -lungs-
pulmonary veins -left atrium -mitral valve -left ventricle -aortic valve -aorta
Cardiac cycle - correct answer...✔✔rhythmic movement of blood flow through the heart
2 phases of the cardiac cycle - correct answer...✔✔systole & diastole
Diastole - correct answer...✔✔ventricles relax and fill with blood (⅔ of the cardiac
cycle), AV valves are open
Systole - correct answer...✔✔hearts contraction (⅓ of cycle), AV valves are closed
Isometric contraction - correct answer...✔✔all 4 heart valves are closed and the
ventricles relax
S1 - correct answer...✔✔occurs with closure of the AV valves, loudest at the apex,
start of systole or "lub"
M1 and T1 - correct answer...✔✔mitral and tricupid component, sound is usually fused
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, S2 - correct answer...✔✔occurs with the closure of the semilunar valves, loudest at the
base (end of systole)
A2 and P2 - correct answer...✔✔aortic and pulmonic components, this sound is usually
fused
S3 - correct answer...✔✔vibrations of ventricular filling, occurs immediately after S2
S4 - correct answer...✔✔vibrations of the atria contract, occurs immediately before S1
Murmurs - correct answer...✔✔sounds like noisy water flow created by a pile of stones.
Gentle, blowing, swooshing sound that can be heard on the chest wall
Causes of murmurs - correct answer...✔✔-increased velocity of blood flow -a
decreased velocity of blood flow -structural defects in valves
Characteristics of sound - correct answer...✔✔1.frequency(pitch), all are low-ferquency
sounds 2.intensity(loudness), loud or soft 3.duration, very short for heart sounds, silent
periods are longer 4.timing, systole or diastole
ECG-electrocardiogram - correct answer...✔✔-the electrical impulse stimulates the
heart to do its work -a small amount of electricity spreads to the body surface, where it
can be measured and recorded on the electrocardiogram
ECG waves - correct answer...✔✔PQRST
P wave - correct answer...✔✔depolarization of the atria
P-R interval - correct answer...✔✔the interval from the beginning of the P wave to the
beginning of the QRS complex
T wave - correct answer...✔✔Repolarization of the ventricles
Cardiac output - correct answer...✔✔amount of blood pumped per minute throughout
the body (4-6L), stroke volume x rate =
Preload - correct answer...✔✔the venous return that builds during diastole
Afterload - correct answer...✔✔the opposing pressure that the ventricle must generate
to open the aortic valve
Carotid Artery Pulse - correct answer...✔✔generated by each systole as blood is
pumped into the aorta, is a central artery, it is located in the groove between the trachea
and the sternomastoid muscle, medial to and alongside that muscle. You NEVER
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