Class notes PHARMACOLOGY Essentials of Medical Pharmacology, ISBN: 9789352704996

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