BMS107exam3-1

BMS107exam3-1 - BMS107exam3 McKinley & OLoughlin Text...

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BMS107exam3 McKinley & O’Loughlin Text Reading Assignments: Chapters 22, 23, 14, 15, 16, 18, 19 Online Lectures: Cardiovascular System: Heart, Vessels, Intro to Nervous System, Brain, Cranial Nerves, Spinal Cord and Spinal Nerves, Autonomic N.S., Special Senses REVIEW QUESTIONS: 1. What is the mediastinum? Where is the base and apex of the heart? a. Mediastinum : a non-delineated group of structures in the thorax, surrounded by loose connective tissue i. Central compartment of the thoracic cavity ii. Contains the heart, the great vessels of the heart, esophagus, trachea, phrenic nerve, cardiac nerve, thoracic duct, thymus, and lymph nodes of the central chest b. Apex : points to the lower left quadrant (toward left lung at 5 th intercostals space) c. Base : at the superior end where the great vessels are (level of 3 rd costal cartilage) 2. Describe the structure of the pericardium . a. Fibrous pericardium: tough, dense CT layer that anchors the heart to the diaphragm and great vessels b. Parietal pericardium: serous membrane that produces serous (pericardial fluid ) and lines the inner surface of the fibrous pericardium c. Visceral pericardium (epicardium): serous membrane that covers the surface of the heart and is continuous with the parietal pericardium. 3. Name the 3 layers of the heart wall (list both layers of the pericardium as one layer). Which layer secretes fluid? a. Epicardium (visceral pericardium): outer layer that secretes serous fluid b. Myocardium : middle layer composed of cardiac muscle tissue i. The thickness varies in accordance with the force needed to eject blood from the particular chamber (thus the thickest part of the myocardium surrounds the left ventricle) c. Endocardium : inner layer of endothelium that is continuous with the blood vessels i. Covers the valves of the heart 4. Beginning at the right atrium, list the path through the heart , pulmonary and systemic circuits that a RBC would take to complete both circuits (don’t list specific blood vessels here other than those near the heart). a. R atrium tricuspid R ventricle pulmonary semilunar pulmonary arteries lungs b. pulmonary veins L atrium bicuspid L ventricle aortic semillunar aorta body
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5. Know the location and basic structure of : right atrium, right AV valve, right ventricle, pulmonary semilunar valve, pulmonary trunk, pulmonary arteries, pulmonary veins, left atrium, left AV valve, left ventricle, aortic semilunar valve, arch of the aorta, papillary muscles, chordae tendinae, interventricular septum, interatrial septum, interventricular sulcus (or groove), coronary sulcus. 6. On a diagram, be able to identify the following structures: right coronary artery, left coronary artery, circumflex coronary artery, anterior descending (interventricular) coronary artery, coronary sinus, great cardiac vein.
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7. Draw a diagram of the heart and show the electrical conduction system of the heart. a.
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BMS107exam3-1 - BMS107exam3 McKinley & OLoughlin Text...

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