1. BIOL 204 Week 3 Lab Dissection and Anatomy of the Heart

2. Objective 1Human Heart Anatomy The heart has an apex and a base: Base Apex

3. The heart is surrounded by a pericardium: Human Heart In the Thorax Pericardial Sac Cut Open Surrounded by the pericardium

4. The wall of the heart consists of three tissue layers: 1.Epicardium (visceral pericardium) 2.Myocardium 3.Endocardium

5. Structures Visible On the Anterior Surface/Associated Vessels: Superior Vena Cava Right Pulmonary Veins Right Auricle Pulmonary Trunk Inferior Vena Cava Aortic Arch Left Pulmonary Veins Left Auricle Anterior Interventricular Sulcus Brachiocephalic Left Common Left Subclavian Artery Carotid Artery Artery

6. Structures Visible on The Posterior Surface: Aorta Pulmonary Veins Coronary Sinus Superior Vena Cava Pulmonary Arteries Inferior Vena Cava Posterior Interventricular Sulcus

7. The Heart Has Four Chambers: Interatrial Septum:lies between the atria Interventricular Septum:lies between the ventricles

8. Internal Structures of the Heart Pectinate Muscle Fossa Ovalis Tricuspid Valve Chordae Tendineae Papillary Muscles Bicuspid Valve Semilunar Valves Trabeculae Carneae Interventricular Septum

9. These two Structures of the Adult Heart Are Remnants of Fetal Circulation: Ligamentum Arteriosum Fossa Ovalis

10. The heart receives its own branch of systemic circulation – there vessels collectively are called coronary circulation Arteries Veins

11. A Sectioned Preserved Human Heart: 1.Interatrial septum 2.Right atrium 3.Left atrium 4.Interventricular septum’ 5.Right ventricle 6.Left ventricle 9. Pulmonary trunk

12. Sheep’s Heart Dissection: note the thickness of the right ventricular and left ventricular walls

13. Cardiac Muscle in found in the myocardium: