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Function of the heart (Transport)
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Transport oxygen and nutrients to all parts of the body. transport carbon and waste away from the body tissues
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Function of the heart (Transport)
Transport oxygen and nutrients to all parts of the body. transport carbon and waste away from the body tissues
Function of the heart (2)
Maintenance of body temperature. Prevention of infection
Heart (part of the system)
tissues, chambers, nerve, stimulation, coronary circulation
Blood Vessels (part of the system)
Arteries = carry blood away from heart, Veins = carry blood toward heart , Capillaries = gas exchange
Blood (part of the system)
Plasma, red and white blood cells, platelets
what is the heart made of
myocardium (cardiac muscles)
Synctium
The individual cells of the myocardium that collectively function so that the heart contracts as a unit
right of heart
deoxygenated blood
left of heart
oxygenated blood
Pericardium (tissues)
Membrane surrounding the heart
epicardium (tissues)
outer layer of the heart
myocardium (tissues)
middle layer of the heart wall
endocardium (tissues)
inner lining of the heart
atria (chamber)
upper. receives blood
ventricle (chamber)
lower. pump out blood
AV valves
between atria and ventricles. one way flow
right AV
tricuspid (3 flaps)
left AV
bicuspid/mitral
pulmonary valve
between right ventricle and pulmonary artery
aortic valve
between left ventricle and aorta
Excitation of the heart
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sinoatrial node(SA)
electrical signals are initiated leading to contraction of heart (peace maker)
internodal pathways
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