Final Heart sounds

Question 1

Abnormal heart sound

Answer 1

murmur

Question 2

Sounds are result of

Answer 2

closure of valves

Question 3

1st sound

Answer 3

closure of the AV valves at the beginning of ventricular contraction

Question 4

2nd sound

Answer 4

closure of the semilunar valves at the beginning of ventricular relaxation

Question 5

Circulation

Answer 5

R atrium > tricuspid valve > Right ventricle > Pulmonic Semilunar valve > Pulmonary arteries (R/L) > Pulmonary capillaries (in lungs) > 4 pulmonary veins > L atrium > bicuspid valve > aortic semilunar valve> aorta

Question 6

Ventricular septal defect

Answer 6

L>R ventricle bc of hole in septum (acyanotic)

Question 7

Shunt w/ cyanosis

Answer 7

caused by VSD and pulmonary valve stenosis(narrowed)> increased pressure in R ventricle = R>L flow = unoxygenated blood in circulation

Question 8

SA

Answer 8

electrical signal starts in r atrium; pacemaker; cardiac impulse

Question 9

AV node ->

Answer 9

slows as it moves through bundle of his (conduction tissue)

Question 10

Bundle of his divides into L and R branches

Answer 10

that send out Purkinje fibers