Term
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Definition
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Term
| What is the Thoracic Cavity composed of? |
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Definition
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Term
| How many pairs of a human being's ribs are attached to the vetebral column? |
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Definition
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Term
| How man pairs of a human being's ribs are attached to the sternum (chest bone)? |
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Definition
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Term
| How many pairs of a human being's ribs are not attached to anything? |
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Definition
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Term
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Definition
| A layer present between the thorax and abdomen. |
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Term
| How are ribs interconnected? |
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Definition
| By internal and external intercostal muscles. |
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Term
| What happens when the diaphragm muscles contract? |
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Definition
| The diaphragm is straight and the pressure of the lungs is reduced. Then, the external intercostal musclees contract which lets the rib cage open. |
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Term
| How does the opening of the rib cage help the lungs? |
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Definition
| It provides more space for the expanding of the lungs by getting gases from the air. |
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Term
| What happens when the diaphragm muscles relax? |
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Definition
| The diaphragm changes into a dome shape. Then, the internal intercostal muscles of the ribs contract which pulls the ribs inwarb. And then, ribs and the diaphragm exert pressure on lungs and gases are released. |
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Term
| What are the 2 layers of membrane that cover the lungs? |
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Definition
1. The parietal pleura
2. The visceral pleura |
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Term
| What does the external pleura attach to? |
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Definition
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Term
| What are the cavity of membranes which contain the lungs called? |
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Definition
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Term
| Where is the pleural fluid present. |
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Definition
| Between the 2 layers of memberane. |
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