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Forelimb - Anatomy & Physiology (view source)
Revision as of 12:14, 15 August 2008
, 12:14, 15 August 2008→Muscles of the Elbow
====Muscles of the Elbow====
====Muscles of the Elbow====
*Extensors
**'''Triceps brachii''': Three heads, four in the dog
***Long head: caudal margin of the scapula
***Lateral, medial, and accessory heads: shaft of the humerus
***Insertion: olecranon, proteced by tricipital bursa against the bone and subcutaneous bursa against the skin
**'''Tensor fasciae andtebrachii'''
***Overlies triceps extending from scapula to olecranon
**'''Anconeus'''
***Origin: distal humerus
***Insertion: lateral olecranon
**Innervation: Radial nerve from the brachial plexus
*Flexors
**'''Biceps brachii'''
***Origin: supraglenoid tubercle of the scapula
***Insertion: medial tuberosity of proximal radius and adjacent ulna
***Runs through the intertubercular groove of the humerus
**'''Brachialis'''
***Origin: proximocaudal humerus
***Insertion: spirals to insert next to biceps
**Innervation: Musculocutaneous n.
====Muscles of Supination and Pronation ====
====Muscles of Supination and Pronation ====