Studied by 1 personHow does the ANS modify heart rhythm?
through cardiac centers in medulla: sympathetic (t1-t5) = accelerator/parasympathetic (vagus nerve) = brakes
ECG meaning (3)
p wave = depolarization of atria, qrs complex = depolarization of ventricles/repolarization of atria, t wave = repolarization of ventricles
A complete cardiac cycle consists of contraction ( ) & relaxation ( ) of both atria/ventricles
systole, diastole
Atrial Diastole
blood flows from veins into atria
Atrial Systole (ventricular diastole) (3)
atria full/valves open, 2/3 blood flows passively into ventricles, atria contract to pump remaining blood
Ventricular Systole (atrial diastole) (2)
av valves close/semilunar valves open, blood actively pumped into arteries
Heart Murmur
abnormal heart sound d/t problem w valves
Cardiac Output
total blood volume pumped by each ventricle in 1 min (avg=5-6L/min), important for normal bp/o2 transport
Cardiac Output
________- total blood volume pumped by each ventricle in 1 min (avg= 5- 6L /min), important for normal bp /o2 transport.
through cardiac centers in medulla
sympathetic (t1-t5) = accelerator/parasympathetic (vagus nerve) = brakes
ECG meaning (3)
p wave = depolarization of atria, qrs complex = depolarization of ventricles/repolarization of atria, t wave = repolarization of ventricles
A complete cardiac cycle consists of contraction ( ) & relaxation ( ) of both atria/ventricles
systole, diastole
Atrial Diastole
blood flows from veins into atria
Atrial Systole (ventricular diastole) (3)
atria full/valves open, 2/3 blood flows passively into ventricles, atria contract to pump remaining blood
Ventricular Systole (atrial diastole) (2)
av valves close/semilunar valves open, blood actively pumped into arteries
Heart Murmur
abnormal heart sound d/t problem w valves
Cardiac Output
total blood volume pumped by each ventricle in 1 min (avg=5-6L/min), important for normal bp/o2 transport
Note
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