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4. The surface of the heart has three layers of membranes to anchor the heart in...

4. The surface of the heart has three layers of membranes to anchor the heart in its place and for lubrication purposes. What is the name of the layer that anchors the heart in its place?

5. The surface of the heart has three layers of membranes to anchor the heart in its place and for lubrication purposes. What is the name of the 2 layers that secret serous fluid for lubrication purpose?

6. Please name the main cell type of the heart

7. Using the skeleton as the reference points, where is the cardiac apex (Left or right of the sternum? Which intercostal space?)

science   Anatomy-And-Physiology   
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4. The pericardium is the outer double sac like structure that holds the heart. It has three layers - the visceral layer, the parietal layer,the fibrous layer. The fibrous pericardium is the outer layer that anchors heart in its place and protects the heart.

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