| OCR Text |
Show 540 MESSRS. BEDDARD AND MITCHELL ON THE [June 19, Intertransversales.-These muscles were obvious all the way along from the ilium to the neck. Obliqui (transverso-spinales).-They are clearly differentiated only from the last to the vnth cervical. They are large fleshy digitations arising from the transverse processes, and inserted on to the lateral face of the spinous processes next but one in front. Rectus capitis anticus major.-It arises all along the neck from the hypapophyses and from fascia; about the middle of the neck it grades into the longus colli, from a slip of which it first arises about the level of the seventh vertebra. Its broad fleshy insertion is tendinous on the outside, is fused with its fellow in the middle line, and extends for about a quarter of an inch on the anterior outer edge of the basi-occipital. Rectus capitis anticus minor.-This is a fleshy broad muscle underlying the preceding. Its origin is fleshy and continuous from first four vertebrae. It has a broad fleshy insertion to the extreme outer posterior face of the ridge behind the meatus auditorius. Longus colli.-It arises from the middle of the centrum of the second dorsal vertebrae tendinously, and then by a series of tendons from each vertebra up to the overlap of tbe rectus capitis. It is inserted by a series of slips to the vertebrae in front of its origins. Intertuberculares.-These are present, apparently normal. Interappendiculares costarum.---The first arises from the end of the last free rib, and runs backwards and downwards to the lateral anterior process of the sternum ; the second from the junction of the sternal and costal parts of the first complete rib, it shortly fuses with the third, which arises from the costal part of the next rib. These two are then inserted together. The fourth arises from the third, fourth, and fifth costal ribs and from the space between them, and is inserted immediately behind the others. The posterior ones are smaller. Intercostales externi.-These are confined to the whole of the costal part; the fibres run from above in front and downwards towards the caudal end. Intercostales interni.-These are confined to the lower half of the costal ribs, and are chiefly tendinous. Costi-sterncdes.-Four slips arising tendinously from the sternal ribs, and inserted fleshy to the sternum. Costo-sternalis externus.-The peculiar muscle to which we have given this name apparently replaces physiologically the uncinate processes, as its broad ribbon-like belly runs diagonally across the outer surface of the ribs. It arises by a very thin flat tendon from the third, fourth, and fifth ribs, and from the interspaces between them. It is inserted to the costal edge of the sternum half an inch from the posterior end. Head-Muscles. Dermo-temporalis.-Arising by a narrow but fleshy head from about half an inch behind and above temporal fossa, contiguous |
