Lecture 15 & 16 Cardiovascular System 2010

Lecture 15 & 16 Cardiovascular System 2010 -...

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Anatomy of the Cardiovascular System
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Cardiovascular System Arteries and Veins Capillary beds Heart Pericardium Layers of the heart Chambers Great vessels Prenatal circulation
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Blood Vessels   Arteries  ~   Carry   blood away from the heart to the body Arterial walls are elastic,  Thick layer of smooth muscle.   These characteristics are important in maintaining blood pressure   Arterioles  ~  the smallest arteries   Capillaries…….
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Blood Vessels   Capillaries ~  the smallest working unit in the blood vessels that connect  the arterioles to the venules   Venules  ~ merge into larger veins  Veins ~   Carry blood toward the heart  Larger in diameter than arteries   Thinner walls  Valves to prevent backflow of blood.
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Capillary Beds
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Arteries     Aorta  ~  Largest artery in the body;  Arises from the left ventricle of the heart,  Goes up (ascends) a little ways,  Bends over (arches),  Then goes down (descends) through the chest and through the abdomen  where it ends by dividing into two arteries that go to the legs. 
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Arteries     Coronary Vessels  ~  Supply the heart muscle with oxygenated blood Branch off aorta before it leaves the heart
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Aortic Arch Arteries that supply the forelimbs and the head  branch off of the aortic arch, before it turns to become the descending aorta . Two branches: Brachiocephalic trunk Carotids Right Brachial (right forelimb) Left Subclavian Left forelimb
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Thoracic Aorta The portion of the Aorta that runs from the arch of the aorta to the  diaphragm, gives off numerous branches that supply oxygenated blood to the  chest and the organs within the chest.  Dorsal intercostal arteries  ~ enter the corresponding intercostal  space, giving off a spinal branch  that enters the vertebral canal to  supply the spinal cord and spinal nerve roots. 
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Abdominal Aorta The final section of the aorta, begins at the aortic hiatus  of the  diaphragm as a continuation of the thoracic aorta and runs down to where 
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This note was uploaded on 12/30/2011 for the course ANSC ANSC211 taught by Professor Black during the Fall '11 term at Maryland.

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Lecture 15 & 16 Cardiovascular System 2010 -...

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