Archive image from page 303 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 282 REPTILIA. middle of its length. This muscle is described by Sir Everard Home as being in the boa constrictor divided into two, an upper and a lower portion ; but in other species, although a slight line of demarcation may be detected, such a division is scarcely admissible. From the ribs of serpents muscular fasci- Fig. 203. An internal liew of the Muscles u-hic/i move the Ribs in the Boa Constrictor. A A, the muscles which pass from cartilage to car
Archive image from page 303 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0401todd Year: 1847 282 REPTILIA. middle of its length. This muscle is described by Sir Everard Home as being in the boa constrictor divided into two, an upper and a lower portion ; but in other species, although a slight line of demarcation may be detected, such a division is scarcely admissible. From the ribs of serpents muscular fasci- Fig. 203. An internal liew of the Muscles u-hic/i move the Ribs in the Boa Constrictor. A A, the muscles which pass from cartilage to cartilage of the different ribs ; B B, a set of muscles which pass from the point of each rib, over two ribs to the middle of the third; c, a similar set of muscles continued from the opposite side of the rib, passing over three ribs to the body of the vertebra; DD, the abdominal muscles which arise from the anterior edge of each rib, and pass to the linea alba; E, the linea alba; F F, the terminations of the oblique muscles which pass from the bony ex- tremities of the ribs to the edges of the scuta; GG, the muscles of the scuta, consisting of two sets, which decussate each other. cull are given off, which go to be inserted into the skin : some of these arise from the same point as the great lateral costals. Their course is from before backwards, and from above downwards as they run, spreading out like a fan, to be attached to the sides of the ventral scuta. The others arise from the lower part of the rib, opposite the point of attachment of the long inferior costal muscle ; these run from behind forwards to be fixed to the angle of a ventral scutum, about Lectures on Conip. Anat., vol. i. three ribs off. The ribs, moreover, give at- tachment to a visceral muscle. In serpents there is only one muscle pro- per to the head, which seems to represent the complexus; this arises from the articular apophyses of the five or six anterior vertebra?, and is inserted into the mastoid bone
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