"Resettlement" the remnants of the 2 nd and 4 th, and the third beam is subjected to these two muscles lateral rays, as m. abductor pollicis longus et. Extensor pollicisbrevis, ending at the head of the 2 nd metacarpal bone, and T. extensor digitalis lateralis (T. extensor digiti quarti [quinti] proprius), ending at the 3 rd finger. Both muscles are involved in straightening the carpal and finger extensor side, too - metacarpophalangeal joints.
2) thoracic muscle of the lower gear (m. serratus ventralis thoracis), outer perymizy is amplified, and he was functionally replaced (in the central role of Supporter of the body) one of the divisions of the deep trunk fascia (fascia seirata).
Exceptionally pronounced degree of specialization also reached the joints of limbs horses and their ligaments.
Without exception, all joints are free of limbs are combined, ie, motion in each joint is closely associated with movements above and below the joints are located (between the values of joint angles is a mutual dependency).
Lead joints, which establish the joint angles throughout the course, is the proximal joints: shoulder and elbow - in the forelimb and knee - in the hind limb. Without exception in all main limb joints (and in most joints and only) axis of motion is - the transverse axis.
Although the two proximal limb joints - shoulder and hip, and have the greatest freedom of movement, allowing movement around the three mutually perpendicular axes, however, and this freedom of movement is only apparent.