. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 278 REPTILIA. oin its tendon to that of the deltoid. In the turtles it is prolonged over all the posterior Fig. Myology of the Tortoise. 2, pterygoideus; 4, dilator tubae; 29, rectns ca- pitis anterior longus; 30, rectus capitis anterior minor; 31, rectus capitis posterior major; 32, rectus capitis posterior minor; 36, iutertransversarii colli; 37, transversarii colli obliqui; 39, lougissinius dorsi; 42, diaphragmaticus. face of the acromion, and is inserted a little higher up than the deltoid. The subscapularis (f
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 278 REPTILIA. oin its tendon to that of the deltoid. In the turtles it is prolonged over all the posterior Fig. Myology of the Tortoise. 2, pterygoideus; 4, dilator tubae; 29, rectns ca- pitis anterior longus; 30, rectus capitis anterior minor; 31, rectus capitis posterior major; 32, rectus capitis posterior minor; 36, iutertransversarii colli; 37, transversarii colli obliqui; 39, lougissinius dorsi; 42, diaphragmaticus. face of the acromion, and is inserted a little higher up than the deltoid. The subscapularis (fig. 201. 64-) is the strongest muscle of the arm ; it arises from all the posterior surface of the scapula, and from three-fourths of the superior face of the coracoid, and runs to attach itself broadly to all the anterior face of the internal tube- rosity ; its coracoid portion describes nearly a quarter of a circle to arrive at its destination. Its action must be powerfully to rotate the arm at the same time that the scapular portion advances it forward. The teres major arises from the posterior edge of the scapula, and unites its tendon to that of the latissimus dorsi. In the turtles there is a teres minor, which arises from the anterior portion of the pos- terior border of the scapula, and runs to be inserted close to the deltoid. The coraco-brachialis consists of two por- tions, as in some mammalia, one of which, the larger, arises broadly from the inferior surface of the coracoid bone ; the other, much smaller, arises between the preceding and the biceps: both are inserted near the sub- scapularis into the internal tuberosity of the humerus. It will be seen from the above account that the muscles of the arm in the Chelonian reptiles are very similar to those of mam- malia, only their different portions are more widely separated on account of the great prolongation of the acromion, and of the coracoid. Muscles of the Fore-arm. — The bones of the arm and the fore-arm not
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