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        | Contents of the thoracic cage (5/6) |  | Definition 
 
        | Heart, Lungs, Airways, Great Vessels, Supporting circulatory/nerve networks. |  | 
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        | Functions of the thoracic cage. |  | Definition 
 
        | Protection; Breathing; Attachments |  | 
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        | The breast is attached between ribs ___ and ___ covering pectoralis major. |  | Definition 
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        | The thoracic cage is made up of ___ pairs of ribs, ___ vertebrae and the ___________. |  | Definition 
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        | What makes a true rib, true? |  | Definition 
 
        | The rib is directly attached at the vertebrae and at the sternum (costal cartilage). |  | 
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        | Rib 1 articulates with which vertebra? |  | Definition 
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        | The two parts of the tubercle of the rib. |  | Definition 
 
        | articular surface; non-articular surface |  | 
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        | The three components of the sternum. |  | Definition 
 
        | Manubrium; body; xyphoid process. |  | 
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        | Two joints of the sternum. |  | Definition 
 
        | manubriosternal and xyphisternal joints |  | 
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        | The three intercostal muscles. |  | Definition 
 
        | external intercostals, internal intercostals, innermost intercostals |  | 
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        | The fibres of the external intercostals point ____ and ______. |  | Definition 
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        | The fibres of the internal intercostals point ______ and ________. |  | Definition 
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        | The intercostal space exists between the ______________ and the ______________ layers of muscle. |  | Definition 
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        | The area below the 12th rib. |  | Definition 
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