THE SURGICAL ANATOMY OF THE HORSE 



MUSCLE 



ORIGIN 



INSERTION 



ACTION 



NERVE- 

 SUPPLY 



Scapulo-ulnaris Scapula, glenoid i Olecranon pro- Flexes the Musculo-spiral 



border cess of ulna I shoulder and 



and fascia of extends the 

 forearm elbow 1 



Triceps extensor 

 cubiti — 



Caput magnum Dorsal angle and 

 posterior bor- 



Ulna, olecranon 

 process 



Caput parvum 

 Caput medium 



der of scapula 

 Humerus shaft 

 Humerus shaft 



Extensor of Musculo-spiral 

 elbow 



Humerus, margin Ulna, olecranon Raises articular Musculo-spiral 

 of olecranon process j capsule which 



fossa it covers ' 



Scapulo - humer- 

 alis gracilis 



Scapula, margin j Humerus, shaft 

 of glenoid 



Raises capsule of Circumflex 

 shoulder joint 

 during flexion 



Coraco-humeralis | Scapula, coracoid Humerus, shaft 

 ' process 



Biceps 



Scapula, coracoid 

 process 



Adducts the arm 

 and extends 

 the shoulder 



Median 



Radius, bicipital | Flexor of elbow | Median 

 tuberosity; and and extensor 

 fascia of fore- of shoulder 



Deltoid 



Scapula, dorsal 

 angle ; and 

 scapular fascia 



Humerus, outer 

 tubercle 



Teres minor Posterior border Humerus, ridge Adducts the Circumflex 



Adducts the 

 humerus and 

 flexes shoulder 



Circumflex 



>f scapula, 

 lower portion 

 of infraspinous 

 fossa, and tub- 

 ercle on rim of 

 glenoid cavity 



between outer 

 tubercle and 

 tuberosity 



humerus and 

 flexes shoulder 



