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17 Cards in this Set
- Front
- Back
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Thorax |
Slatted, protective, egg-shaped cage for the contents of the chest and anchorage for external trunk muscles, wider than it is deep, half again as high as the skull |
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Thoracic arch |
Front margin of the large aperture below the thorax which is a conspicuous surface feature and may reach 90 degrees in well-developed subjects |
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Ribs |
Derived from facets in the thoracic vertebrae and making their cartilage attachments in front to the sternum, swinging obliquely downward from the front, most oblique in the lower thorax |
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Costal cartilages |
Strap-like attachments from the sternum to the ribs |
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Intercostal spaces |
Spaces between the ribs, the first lies between the first and second rib |
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True ribs |
The upper 7 pairs that establish direct contact with the sternum by individual cartilages |
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False ribs |
Lower 5 pairs |
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Floating ribs |
Ribs XI and XII which are without cartilage and have no sternal attachment whatever, lying concealed within the wall of the back |
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Sternum |
Breastbone, gathers up ribs in the midline, 6-8 inches in length, thrust like a dagger downward |
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Manubrium |
Flat plate whose upper margin displays three indented surfaces, the outer two receiving the clavicle, and the middle called the jugular notch (floor of the pit of the neck) and whose lower margin is dented on either side to receive the first rib |
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Body |
Twice the length of the manubrium with which it forms a slight forward angle |
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Xiphoid process |
May be either bone or cartilage, as large as the last segment of the thumb and lies suspended from the body of the sternum as the apex of the thoracic arch at the pit of the stomach |
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Head (rib) |
Used to articulate with the facets in the vertebral column (plane joints) |
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Neck (rib) |
Constriction next to the head |
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Tubercle (rib) |
Makes contact with the transverse process of the ribs corresponding vertebra |
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Body (rib) |
Remainder of the flat blade-like ribs |
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Angle (rib) |
Special distinction of man that allows him to lie upon back |
