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Cardiovascular system (Conduction system (Bundle Branches, Purkinje fibres…
Cardiovascular system
Conduction system
Bundle Branches
Purkinje fibres
Bundle of His
AV Node
SA Node
Venous return
Smooth muscle
Gravity
Pocket valves
Muscle pump
Respiratory pump
Volumes
Stroke Volume
The amount of blood ejected from the left ventricle per beat
Heart Rate
The number of times the heart beats per minute
Cardiac Output
The amount of blood ejected from the left ventricle per minute
Bradycardia
Resting heart rate below 60bpm
Maximum Heart Rate
Calculated by subtracting your age from 220
Control centre
Neural Control
Baroreceptors
detect change in blood pressure
Chemoreceptors
detect change in pH levels
Proprioceptors
detect change in movement
Hormonal Control
Adreniline
Intrinsic control
Thermoreceptors
detect change in temperature
Venous return
Circuits
Pulmonary
Circulation of blood through the pulmonary arteries and veins back to the heart
Systemic
circulation of the blood through the aorta to the body and vena cavae back to the heart
Cardiac cycle
Diastole
Relaxation
Systole
Contraction
Nervous System
Parasympathetic
responsible for decreasing the heart rate
Sympathetic
responsible for increasing the heart rate
Vasodilation
widening of arteries
Vasoconstriction
narrowing of arteries