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9 Cards in this Set
- Front
- Back
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What are the functions of the circulatory system?
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Transport - Blood and the heart and circulatory vessels carry a number of things around the body. e.g oxygen, nutrients, waste products
Regulate temperature- Smooth muscle lining the arterioles have the ability to contract and decrease there size (vasoconstrict) or relax and open up ( vasodialate). Maintain Fluid Balance - There is a constant exchange of fluid between blood and the fluid surrounding cells. |
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Where is the heart located?
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The heart is located in the middle of the thorax. Otherwise known a the Mediastinum.
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Describe the outer covering of the heart:
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This layer is termed the parietal percardium. It has a fibrous outer layer and an inner serous layer. The second layer produces a thin fluid.
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Describe the inner covering of the heart:
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The inner covering, covers the heart muscle and is termed the visceral percardium. It is a serous membrane.
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What is the Percardial Sac?
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The space between the serous layer of the parietal and the visceral. Because of the fluid in the sac little friction is generated when the heart moves with each beat.
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What is the myocardium?
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It is the heart muscle
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What is the endocardium?
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The inner lining of the four chambers of the heart.
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What separates the right atrium from the left?
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The atrial Septum
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What separates the right ventricle from the left?
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the interventricular septum.
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