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How do you think that the heart gets blood to its tissues?. DO NOW. The Blood Vessels. The Cardiovascular System. Carry blood away from the heart Structure: Tunica interna – endothelial cells Tunica media – smooth muscle (blood pressure) Tunica externa – elastic tissue Function:

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  1. How do you think that the heart gets blood to its tissues? DO NOW

  2. The Blood Vessels The Cardiovascular System

  3. Carry blood away from the heart • Structure: • Tunica interna – endothelial cells • Tunica media – smooth muscle (blood pressure) • Tunica externa – elastic tissue • Function: • Distribution of nutrients, gases, etc, with movement of blood under high pressure • Assist in maintaining arterial blood pressure Arteries

  4. Carry blood toward the heart • Structure: • Tunica interna – valves prevent movement of blood • Tunica media – smooth muscle (thinner than artery) • Tunica externa – heavy layer • Function: • Collect blood for return to the heart • Low pressure vessels Veins

  5. Carry blood from the arterioles to venules • Structure: • Microscopic vessels • Only layer is tunica interna Capillaries

  6. Angi/o – vessel • Arteri/o – artery • Phleb/o, ven/o – vein • Ather/o – yellow, fatty plaque • Isch/o – deficiency, blockage • Therm/o – heat Combining Forms

  7. Coronary artery disease – reduces flow of blood through coronary arteries through the myocardium resulting in heart tissue necrosis (death) • Deep vein thrombosis – thrombus in a deep vein; clot can break off causing pulmonary embolism • Varicose veins – distended or torturous veins found in lower extremeties Diseases/Disorders (NBFWP)

  8. Coronary stent – device implanted in coronary artery used to prevent closure of the artery Surgical Terms (NBFWP)

  9. Dopplar ultrasound – uses sound for detection of blood flow within the vessels • Blood pressure – pressure exerted by the blood against the blood pressure walls • Percussion – tapping of a body surface with the fingers to determine the density beneath • Pulse – number of times per minute the heartbeat is felt on the arterial wall • Sphygmomanometer – device used to measure blood pressure • Stethoscope – instrument used to hear internal body sounds Diagnostic Terms (NBFWP)

  10. Hypertension – blood pressure above normal (>140/90) • Hypotension – blood pressure below normal (<90/60) • Lumen – space within a tubular part • Occlude – close tightly, block • Vasoconstrictor – agent that narrows the blood vessels • Vasodilator – agent that enlarges the blood vessels • Venipuncture – puncture of vein to remove blood, instill medication or start intravenous infusion Complementary Terms (NBFWP)

  11. Disease/disorders • Angioma • Angiostenosis • Arteriosclerosis • Atherosclerosis • Plebitis • Polyarteritis • thrombophlebitis • Surgical terms • Angioplasty • Atherectomy • Endarterectomy • Plebectomy • Plebotomy • valvuloplasty Homework

  12. Diagnosis terms • Angiography • Angioscope • Angioscopy • Aortogram • Arteriogram • Venogram • Venography • Complementary terms • Atriventricular • Phlebologist • phlebology Homework

  13. If you have blackboard course… If you DON’T have blackboard course… Get a computer Research coronary artery disease Add your facts to the poster on the wall DO NOT DUPLICATE! • Take up though test 6 • Pass by poster for coronary artery disease and record facts in your notebook Next…

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