BIOL 204 Week 3 Lab

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BIOL 204 Week 3 Lab

• Dissection and
• Anatomy of the Heart

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Objective 1 Human Heart Anatomy The heart has
an apex and a base
Base
Apex
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The heart is surrounded by a pericardium
Human Heart In the Thorax Pericardial Sac
Cut Open Surrounded by the pericardium
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The wall of the heart consists of three tissue
layers 1. Epicardium (visceral
pericardium) 2. Myocardium 3. Endocardium
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Structures Visible On the Anterior
Surface/Associated Vessels
Brachiocephalic Left Common Left
Subclavian Artery Carotid
Artery Artery
Superior Vena Cava Right Pulmonary
Veins Right Auricle Pulmonary Trunk Inferior
Vena Cava


Aortic Arch Left Pulmonary Veins Left
Auricle Anterior Interventricular Sulcus
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Structures Visible on The Posterior Surface
Aorta Pulmonary Veins Coronary Sinus
Superior Vena Cava Pulmonary Arteries Inferior
Vena Cava Posterior Interventricular Sulcus
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The Heart Has Four Chambers
Interatrial Septum lies between the
atria Interventricular Septum lies between the
ventricles
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Internal Structures of the Heart
Pectinate Muscle Fossa Ovalis Tricuspid
Valve Chordae Tendineae Papillary Muscles
Bicuspid Valve Semilunar Valves Trabeculae
Carneae Interventricular Septum
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These two Structures of the Adult Heart Are
Remnants of Fetal Circulation
Ligamentum Arteriosum Fossa Ovalis
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The heart receives its own branch of systemic
circulation there vessels collectively are
called coronary circulation
Arteries Veins
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• A Sectioned Preserved Human Heart
• Interatrial septum
• Right atrium
• Left atrium
• Interventricular septum
• Right ventricle
• Left ventricle
• 9. Pulmonary trunk

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Sheeps Heart Dissection note the thickness
of the right ventricular and left ventricular
walls
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Cardiac Muscle in found in the myocardium