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Anatomy of the Anatomy of the HeartHeart
Salt Lake Community College Salt Lake Community College
Human Anatomy LaboratoryHuman Anatomy Laboratory
20-20-11
ObjectivesObjectives• Review blood histologyReview blood histology
• Review cardiac muscle histologyReview cardiac muscle histology
• Identify layers of the heart wallIdentify layers of the heart wall
• Review the location of the heart within the Review the location of the heart within the thoracic cavitythoracic cavity
• Identify structures in gross anatomy of the Identify structures in gross anatomy of the heartheart
• Identify vessels involved in coronary Identify vessels involved in coronary circulationcirculation
20-20-22
HeartHeart• Located directly behind sternumLocated directly behind sternum
Figure 20–2a
Between pleural cavities in the mediastinum
Heart ValvesHeart Valves
• Atrioventricular valvesAtrioventricular valves• TricuspidTricuspid
• Bicuspid or mitralBicuspid or mitral
• Semilunar valvesSemilunar valves• AorticAortic
• PulmonaryPulmonary
• Prevent blood from Prevent blood from flowing backflowing back
20-20-1515