What major organs surround the heart? What is the covering over the heart? What

Question

What major organs surround the heart? What is the covering over the heart? What is the function of the cardiac veins and coronary arteries? What happens when a coronary artery is blocked? Locate the aorta and the superior vena cava. Descend through the heart level using the depth bar. What structures appear/disappear as you go deeper? Draw the heart as you see it and identify the structures of the heart on your master term list that can be seen in this view Go to the heart -cut section. Identify all the structures in this view. What is the function of the papillary muscles? To what structures do they attach? Il. Fresh Sheep/Cow Hearts. ON'T SPEND ALL OF YOUR TIME ON APR.!! fingers or

Explanation / Answer

1) The heart is surrounded laterally by the lungs, in the region of posterior by the esophagus and trachea, and in the region of anterior by the rib cage.

2) Pericardium is the covering over the heart. This membrane surrounds the heart. It is a double-walled structure, which protects the heart and helps hold it in it’s place.

3) The function of cardiac veins - Remove the deoxygenated blood from the heart muscle.

The function of coronary arteries - Deliver oxygen-rich blood to the myocardium.

4) When a coronary artery is blocked, that can result in a heart attack. This triggers the formation of a blood clot around the plaque. When the supply of oxygen is completely blocked, then the heart muscle and tissue, which is supplied by coronary artery start to die.

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