The Cardiovascular System
A closed system of the heart and blood
vessels
The heart pumps blood
Blood vessels allow blood to circulate to all
parts of the body
The function of the cardiovascular
system is to deliver oxygen and
nutrients and to remove carbon dioxide
and other waste products
, The Heart
Location
Thorax between the lungs
Pointed apex directed toward left (in
dextrocardia it lies on right side)
• About the size of clenched fist in
Children and double the fist in adults.
• Weight 250g and 300 g in Females and
males resp.
,The Heart
, The Heart: Heart Wall
Three layers
Epicardium
Outside layer
This layer is the parietal pericardium
Connective tissue layer
Myocardium
Middle layer
Cardiac muscle
Endocardium
Inner layer
Endothelium
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