Lab1CardioAnat - LAB 1 CARDIOVASCULAR ANATOMY OUTLINE OF...

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1 © 2001 Dee U. Silverthorn LAB 1: CARDIOVASCULAR ANATOMY OUTLINE OF ACTIVITIES I. The heart: examination of models & figures A. Position in thorax B. External anatomy C. Coronary circulation D. Internal Anatomy E. Histology II. Sheep heart dissection: External and Internal III. Fetal circulation: comparison to adult OBJECTIVES 1. Describe the contents of the thorax. 2. Trace a drop of blood from the systemic veins, through the heart and lungs, and out into a systemic artery, naming all blood vessels, heart chambers, and valves that the drop of blood encounters. 3. Describe the coronary circulation and identify the surface vessels of the heart. 4. Describe the major pathologies of the heart valves. 5. Draw and label the major internal structures of the heart. 6. Explain the anatomical and functional differences between fetal and adult circulatory systems. I. THE HEART: examination of models and figures A. Position in thorax Look at the torso models to understand the location of the heart in the thorax. The thoracic cavity can be divided into three compartments: two pleural sacs, each surrounding a lung, and the mediastinum , the central portion of the thorax. The mediastinum contains the heart in its pericardial sac , the esophagus, the airways, and the major blood vessels leading to and from the heart. Two-thirds of the heart lies to the left of the midline. The heart is angled so that the broad base of the heart points toward the right shoulder and the apex points toward the lower left ribs. B. External Anatomy: Outer surface of the heart Locate the following structures on the models or textbook figures. You may wish to label the drawings with the parts as you find them. Atria and ventricles . The small extensions of the atria that extend toward the base of the aorta and pulmonary artery are called auricles [a uricula , ear] or atrial appendages. The singular form of the word atria is ____________________________. Inferior and superior vena cavae bring venous blood from the systemic circulation back to the ___________________ side of the heart. Pulmonary trunk that leads from the ________________________ ventricle to the lungs. Left and right pulmonary veins that bring blood back from the lungs to the __________________atrium. Each side has two branches, one on top of the other, so they are described as the left or right _____________________ (on top) pulmonary vein and the ____________________ (on the bottom) pulmonary veins.
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2 © 2001 Dee U. Silverthorn B. External Anatomy, cont’d. Label the two drawings as Anterior or Posterior . Put the numbers for the listed parts on the drawings below. All parts may not appear on both drawings. (# 6-9, label after reading next section) 1. aortic arch 7. coronary sulcus 13. pulmonary artery, left 19. ligamentum 2. atrium, right 8. interventricular sulcus, anterior 14. pulmonary vein, left arteriosum 3. atrium, left 9. interventricular sulcus, posterior 15. vena cava, superior 20. ascending
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Lab1CardioAnat - LAB 1 CARDIOVASCULAR ANATOMY OUTLINE OF...

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