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Side A ------ Side B
The heart is located... ------ in the mediastinum of the thoracic cavity.(between the sternum, lungs and thoracic vertebrae)
The serous membrane of the heart is... ------ the pericardium.
Outer Parietal ------ attaches heart to mediastinum. has fibrous tissue so heart doesn't over expand.
Visceral Layer ------ called epicardium. lines the surface of the heart.
Pericardial Cavity ------ space between parietal and visceral layer. filled with fluid to reduce friction. Both layers have mesothelium that secrete serous fluid. 
Myocardium ------ muscle of the heart.uninucleated cardiac muscle cells.
Endocardium ------ line the heart chambers. inner layer of the heart. endothelial cells.
auto-rhythmic  ------ regulates its own relaxation and contraction phases without nerve stimulation. can be affected by nerve stimulation.
Sinu-Atrial Node (SA Node) ------ action potential originates here. 
atrivoventricular node (AV node) ------ pass slowly through atrium wall so atria can contract. 
atrioventricular bundle ------ signal passes through here to divide into left and right bundles to the ventricles.
purkinje fibers ------ begin at apex of ventricles. stimulate ventricle walls simultaneously to elicit stronger contraction.
Baroreceptors ------ located in the carotid sinus and aortic arch respond to increase in blood pressure. this stretches the carotid arteries and aorta. increase action potential generation.
Medulla Oblongatta ------ receives information from the vagus and glossopharyngeal nerves from the heart to increase parasympathetic stimulation.
Superior and Inferior Vena Cava ------ deliver blood to right atrium.
tricuspid (AV) valve ------ connects right atrium and ventricle
pulmonary semilunar valve ------ empties blood into the pulmonary arteries.
bicuspid AV Valve ------ empties blood from left atrium into the left ventricle
systemic semilunar valve ------ empties blood from left ventricle to the aorta.
coronary sinus ------ all coronary veins merge herelocated in coronary sulcusempties deoxygenated blood to right atrium
coronary veins ------ great c.v., small c.v., middle c.v., posterior c.v.
chordae tendineae ------ hold valves shut

Side A ------ Side B
The heart is located... ------ in the mediastinum of the thoracic cavity.(between the sternum, lungs and thoracic vertebrae)
The serous membrane of the heart is... ------ the pericardium.
Outer Parietal ------ attaches heart to mediastinum. has fibrous tissue so heart doesn't over expand.
Visceral Layer ------ called epicardium. lines the surface of the heart.
Pericardial Cavity ------ space between parietal and visceral layer. filled with fluid to reduce friction. Both layers have mesothelium that secrete serous fluid. 
Myocardium ------ muscle of the heart.uninucleated cardiac muscle cells.
Endocardium ------ line the heart chambers. inner layer of the heart. endothelial cells.
auto-rhythmic  ------ regulates its own relaxation and contraction phases without nerve stimulation. can be affected by nerve stimulation.
Sinu-Atrial Node (SA Node) ------ action potential originates here. 
atrivoventricular node (AV node) ------ pass slowly through atrium wall so atria can contract. 
atrioventricular bundle ------ signal passes through here to divide into left and right bundles to the ventricles.
purkinje fibers ------ begin at apex of ventricles. stimulate ventricle walls simultaneously to elicit stronger contraction.
Baroreceptors ------ located in the carotid sinus and aortic arch respond to increase in blood pressure. this stretches the carotid arteries and aorta. increase action potential generation.
Medulla Oblongatta ------ receives information from the vagus and glossopharyngeal nerves from the heart to increase parasympathetic stimulation.
Superior and Inferior Vena Cava ------ deliver blood to right atrium.
tricuspid (AV) valve ------ connects right atrium and ventricle
pulmonary semilunar valve ------ empties blood into the pulmonary arteries.
bicuspid AV Valve ------ empties blood from left atrium into the left ventricle
systemic semilunar valve ------ empties blood from left ventricle to the aorta.
coronary sinus ------ all coronary veins merge herelocated in coronary sulcusempties deoxygenated blood to right atrium
coronary veins ------ great c.v., small c.v., middle c.v., posterior c.v.
chordae tendineae ------ hold valves shut