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Forelimb - Anatomy & Physiology (view source)
Revision as of 14:04, 14 August 2008
, 14:04, 14 August 2008→Muscles of the Forelimb
==Muscles of the Forelimb==
==Muscles of the Forelimb==
===Extrinsic Musculature Forelimb===
These muscle are responsible for joining tht forelimb to the trunk, forming a synsarcosis rather than a conventional joint. Collectively, they act to transfer the weight of the body to the forelimbs as well as stabilize the scapula.
'''''Trapezius'''''
*Origin: mid-dorsal raphe and supraspinous ligament
*Insertion: spine of the scapula
*Body: two parts, cervical and thoracic separated by aponeurosis
*Action: raises scapula against the trunk and swings cranially to advance the limb
'''''Brachiocephalic m.'''''
*Two parts separated by the clavicle
*Caudal: '''cleidobrachialis'''
**passes between clavicle and humerus and functions as part of the deltoideus
*Cranial:
**passes cranially to clavicle to several attachments in the head and neck
'''''Omotransversarius'''''
*Origin: transverse processes of the atlas
*Insertion: acromion and adjacent scapula
*Action: advancing the limb
'''''Latissimus dorsi'''''
'''''Pectoral mm.'''''
'''''Serratis ventralis'''''