ACTIVITY 21.2 Examining the External Anatomy of the Heart The heart and its surrounding pericardial cavity are located w

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Activity 21 2 Examining The External Anatomy Of The Heart The Heart And Its Surrounding Pericardial Cavity Are Located W 1 (53.2 KiB) Viewed 84 times

ACTIVITY 21.2 Examining the External Anatomy of the Heart The heart and its surrounding pericardial cavity are located within the mediastinum, a centrally located area within the thoracic cavity. 376 On a torso model, observe the position of the heart Notice that two-thirds of the organis positioned to the left of the midline. The heart is divided into left and right sides. Each side contains two chambers a superior atrium that receives blood and an inferior ventricle that discharges blood. Examine a model of the heart from an anterior view Identify three of the four heart chambers: right atrium- and its medial appendage the right auricle right ventricle left ventricle left atrium (best observed from a posterior view) Locate the apex of the heart. It is formed by the inferior tip of the left ventricle. Label the apex on the diagram. EXERCISE 21 Gross Anatomy of the Heart Anterior view Identify the structures that border the heart: a. Anteriorly b. Laterally c. Inferiorly Remove the heart and identify the structures that border the heart posteriorly, Identify the great blood vessels that are connected to the base of the heart, Label them on the diagram. The superior vena cava empties into the right atrium. The ascending aorta receives blood from the left ventricle and gives rise to the arch of the aorta The pulmonary trunk is located anterior to the ascending aorta and receives blood from the right ventricle. Identify two major sulci (grooves) on the anterior surface and label them on the diagram. The coronary sulcus divides the atria, superiorly, from the ventricles, inferiorly. The anterior interventricular sulcus travels toward the apex and forms a border between the left and right ventricles