Fig. 8.
Fig. 8. 1, The frontal, or bone of the forehead. 2. The parietal bone. 3, The temporal bone. 4, The zygomatic process of the temporal bone. 5, The malar (cheek) bone. 6, The superior maxillary bone, (upper jaw.) 7, The vomer, that separates the cavities of the nose. 8, The inferior maxillary bone, (lower jaw.) 9. The cavity for the eye.
82. The TRUNK has fifty-four bones—twenty-four Ribs; twenty-four bones in the Spi´nal Col´umn, (back-bone;) four in the Pel´vis; the Ster´num, (breast-bone;) and the Os hy-oid´es, (the bone at the base of the tongue.) They are so arranged as to form, with the soft parts attached to them, two cavities, called the Tho´rax (chest) and Ab-do´men.
80. How many bones in the ear? 81. How many bones in the face? What is their use? Explain fig. 8. 82–94. Give the anatomy of the bones of the trunk. 82. How many bones in the trunk? Name them. What do they form by their arrangement?
83. The THORAX is formed by the sternum in front; the ribs, at the sides; and the twelve dorsal bones of the spinal column, posteriorly. The natural form of the chest is a cone, with its apex above; but fashion, in many instances, has nearly inverted this order. This cavity contains the lungs, heart, and large blood-vessels.
Fig. 9.