III.A.2 Thorax: Heart

Heart: Page 2 of 6

	The sinu-atrial node is not visable in our cadaver. Rotate the cadaver and use the drawings to find the approximate location of the sinu-atrial node.
	Add the atrioventricular node which is highlighted in pink. The atrioventricular node is found in the atrial septum and is not visable once the septum is added.
	Add the interatrial septum.
	Add the interventricular septum.

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	The atrioventricular node is the origin of the left and right bundle branches that control the contractions of the left and right ventricles. These bundle branches are not visable on this cadaver. Take some time during the demonstration table to review the cardiac conduction system.
	Add the tricuspid valve.
	Add the pulmonary valve.

Add the pulmonary trunk with left and right pulmonary arteries.

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Briefly trace the flow of blood from the superior and inferior vena cava through the tricuspid valve and out the pulmonic valve to the left and right pulmonary arteries.

Spend more time on this with the heart models located on the demonstration table.