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CV_System_v2 - EXSS 175 Human Anatomy...

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Click to edit Master subtitle style Cardiovascular System EXSS - 175 Human Anatomy
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Click to edit Master subtitle style Cardiovascular System Strong emphasis placed on this system Imperative knowledge base for ALL exercise based coursework  within the department (phys, ex phys, exercise prescription) Focus on: Heart Vessels Blood Circulation Peripheral circulation (blood supply for the extremities) Cerebral circulation (blood supply for the brain) Coronary circulation (blood supply to the heart muscle) Hepatic portal circulation (role of liver and other abdominal organs)
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Click to edit Master subtitle style Heart  General Central component of CV system Functions to propel blood through vessels Hollow, cone-shaped organ the size of a person’s fist Heart pumps over 1 million gallons per year. Through over 60,000 miles of blood vessels
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Click to edit Master subtitle style Location of Heart Located in the mediastinum – anatomical region  extending from the sternum to the vertebral  column, the first rib and between the lungs
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Click to edit Master subtitle style Pericardium Membrane surrounding and protecting the  heart Confines while still allowing free movement 2 main parts Fibrous pericardium – tough, inelastic, dense  irregular connective tissue – prevents  overstretching, protection, anchorage Serous pericardium – thinner, more delicate  membrane – double layer (parietal layer fused to 
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Click to edit Master subtitle style Layers of the Heart Wall 1. Epicardium (external layer) Visceral layer of serous pericardium Smooth, slippery texture to outermost surface 2. Myocardium 95% of heart is cardiac muscle 3. Endocardium (inner layer) Smooth lining for chambers of heart, valves 
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Click to edit Master subtitle style 4 Chambers of Heart (receives blood from) Two superior chambers (receiving chambers) Right Atrium  Superior & inferior vena cava, coronary sinus Left Atrium  Four pulmonary veins Separated by interatrial septum Two inferior chambers (pumping chambers) Right Ventricle Right atrium Left Ventricle  Left atrium
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Click to edit Master subtitle style Chambers of Heart
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Click to edit Master subtitle style Valves of Heart Prevent backflow of blood Atrioventricular and semilunar valves open/close  alternately (i.e. AV open/SL close) Atrioventricular Valves:   Prevent backflow within  heart Tricuspid (right side) Located between right atrium and right ventricle Bicuspid/Mitral (left side) 
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