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| GrayAnatomy |
27 |
(Breast Bone) 1
FIG. 115– Anterior surface of sternum and costa cartilages. (See enlarged image)
The sternum (Figs. 115 to 117) is an elongated, flattened bone, forming the middle portion of the ante |
8.46 KB |
2019-09-03 |
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2 |
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119 |
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| GrayAnatomy |
28 |
(Costæ)The ribs are elastic arches of bone, which form a large part of the thoracic skeleton. They are twelve in number on either side; but this number may be increased by the development of a cervica |
10 KB |
2019-09-03 |
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2 |
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147 |
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| GrayAnatomy |
29 |
(Cartilagines Costales)The costal cartilages (Fig. 115) are bars of hyaline cartilage which serve to prolong the ribs forward and contribute very materially to the elasticity of the walls of the thora |
6.88 KB |
2019-09-03 |
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2 |
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95 |
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| GrayAnatomy |
30 |
The skull is supported on the summit of the vertebral column, and is of an oval shape, wider behind than in front. It is composed of a series of flattened or irregular bones which, with one exception |
1005 Bytes |
2019-09-03 |
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2 |
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28 |
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| GrayAnatomy |
31 |
(Ossa Cranii) & (Os Occipitale).The occipital bone (Figs. 129, 130), situated at the back and lower part of the cranium, is trapezoid in shape and curved on itself. It is pierced by a large oval apert |
11.8 KB |
2019-09-03 |
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2 |
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190 |
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| GrayAnatomy |
32 |
(Os Parietale)The parietal bones form, by their union, the sides and roof of the cranium. Each bone is irregularly quadrilateral in form, and has two surfaces, four borders, and four angles. 1
FIG. 13 |
4.71 KB |
2019-09-03 |
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2 |
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63 |
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| GrayAnatomy |
33 |
(Os Frontale)The frontal bone resembles a cockle-shell in form, and consists of two portions—a vertical portion, the squama, corresponding with the region of the forehead; and an orbital or horizontal |
9.2 KB |
2019-09-03 |
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2 |
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152 |
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| GrayAnatomy |
34 |
(Os Temporale)The temporal bones are situated at the sides and base of the skull. Each consists of five parts, viz., the squama, the petrous, mastoid, and tympanic parts, and the styloid process. 1
T |
25.3 KB |
2019-09-03 |
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2 |
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354 |
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| GrayAnatomy |
35 |
(Os Sphenoidale)The sphenoid bone is situated at the base of the skull in front of the temporals and basilar part of the occipital. It somewhat resembles a bat with its wings extended, and is divided |
19.4 KB |
2019-09-03 |
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2 |
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328 |
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| GrayAnatomy |
36 |
(Os Ethmoidale)The ethmoid bone is exceedingly light and spongy, and cubical in shape; it is situated at the anterior part of the base of the cranium, between the two orbits, at the roof of the nose, |
8.32 KB |
2019-09-03 |
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2 |
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153 |
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