Muscle review: thoracic limb Flashcards
Supraspinatus: origin/insertion
Supraspinous fossa to proximal humerus
Supraspinatus: function
Stabilize and help extend shoulder joint
Supraspinatus: innervation
Suprascapular nerve
Infraspinatus: origin/insertion
Infraspinatous fossa to cranial humerus
Infraspinatus: function
Stabilize shoulder joint/assist shoulder extension and flexion/shoulder external rotation
Infraspinatus: innervation
Suprascapular nerve
Subscapularis: origin/insertion
Medial aspect of scapula to medial aspect of humerus
Subscapularis: function
Stabilize shoulder joint/assis shoulder flexion/medial rotation
Subscapularis: innervation
Subscapular nerve
Deltoideus: origin/insertion
2 heads: Acromion (sm. head) and lateral spine of scapula (lg. head) to deltoid tuberosity of humerus
Deltoideus: function
Stabilize shoulder joint/flex shoulder joint
Deltoideus: innervation
Axillary nerve
Teres major: origin/insertion
Caudal border of scapula to teres tuberosity of humerus
Teres major: function
Stabilize shoulder joint/flex shoulder/medial rotation of forearm
Teres major: innervation
Axillary nerve
Teres minor: origin/insertion
Infraglenoid tubercle and caudal scapula to proximal Deltoid tuberosity
Teres minor: function
Stabilize shoulder joint/flex shoulder joint/externally rotate forelimb
Teres minor: innervation
Axillary nerve
Biceps brachii: origin/insertion
Supraglenoid tubercle to proximal 1/3 of radius and ulna
Biceps brachii: function
Flex elbow/extend shoulder
Biceps brachii: innervation
Musculocutaneous nerve