The Cardiac Pump Flashcards
are the left and right atrium in snych
no , due to differences in pressure gradient
lubb sound of the heart is associated iwth what valvue openining
semilunar opening
the dubb sound of the heart is associated with what valvue closing
the semilunar valve closing
what is stroke volume
• The stoke volume (SV) is the difference between EDV and ESV.
s1 is associated with what valvue
• S1 the first heart sound, is generated by closure of the AV valves (the mitral valve
closes slightly before the tricuspid valve)
s2 is associated with what valuve
• S2 closure of the aortic and pulmonic valve (with aortic valve closure occurring
slightly before pulmonic valve closure)
what is unique about s3
• S3
is associated with rapid ventricular filling and is normal in children, but it is not
heard in healthy adults
what is unique about s4
is associated with active ventricular filling and is not audible in healthy adults.
what is the average cardiac output in an adult
• 5 liters (L) per minute (min) in the average resting adult.
what is the equation for cardiac output
stroke volume x heart rate
what is avg resting HR
70
sympathetic nerve endings at the heart and vessels release
what neurotransmitter
sympathetic nerve endings at the heart and vessels release
norepinephrine (NE)
• parasympathetic nerves release what neurotransmitter
• parasympathetic nerves release acetylcholine
what is occuring during diastole
ventricles fill at low pressure
During isovolumetric contraction, what happens to the pressure and volume
During isovolumetric contraction, the pressure rises quickly, but the volume
remains the same
