heart beat and heart sounds

what is a heart beat

atrial contraction followed by ventricular contraction

what is a systole

contraction of heart chamber

what is an atrial systole

when the atria contract and pump blood into ventricles

what is a ventricular systole

when the ventricles contract and pump blood out of the heart to the lungs or body

what is a diastole

relaxation of heart chamber

what happens during diastole

atria and ventricles relax and start to fill with blood

what can heart sounds be generated by

vibrations made when valves close

heart sounds can also be seen with abnormal ______

valve opening

heart sounds can also be seen with tensing of __

chordae tendinea

heart sounds can be seen with turbulent ____

flow across valves

first heart sound (S1)

heard with closure of mitral and tricuspid valves)

timing of S1

slightly split (mitral closes just before tricuspid)

second heart sound S2

closure of aortic and pulmonic valves

timing of s2

slightly split but more pronounced depnding on body posture and respiration

is there s3 or s4?

yes, s3 in kids and s4, but it is abnormal and occurs when heart is stiffened.

where is aortic

1

where is pulmonary

2

where is tricuspid 

3

where is mitral

4