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Transcript 
Anatomy of the Heart
Salt Lake Community College
Human Anatomy Laboratory
20-1
Objectives
•
•
•
•
Review blood histology
Review cardiac muscle histology
Identify layers of the heart wall
Review the location of the heart within
the thoracic cavity
• Identify structures in gross anatomy of
the heart
• Identify vessels involved in coronary
circulation
20-2
Organization
of the
Cardiovascular
System
Figure 20–1
Cardiac Muscle Histology
20-4
Blood Cells
20-5
Heart
• Located directly behind
sternum
Between 2 pleural cavities in the
mediastinum
Figure 20–2a
HEART
The real
thing in
ventral
view.
Lungs
have been
removed.
Pericardium
20-8
Heart Wall
20-9
Specific Heart Anatomy
Anterior View
External Anatomy
20-11
Coronary Circulation
Figure 18.7a
Figure 20–6a
Walls of the ventricles:
Left wall is thicker!
Heart Valves
• Atrioventricular
– Tricuspid
– Bicuspid or mitral
• Semilunar
– Aortic
– Pulmonary
• Prevent blood from
flowing back
20-15
Heart Valves
20-16
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