320 THE MUSCl.l 



2. Long flexor of the fore-arm, or brachial biceps. 



3. Coraoo-hmohlnl imiM-1.-. 



4. Supraspinatus muscle. 



il. Jly 1/8 poxterior border, comprised betioeen the dorsal anyle awl ///< 

 fpoiidiiuj portion of the humeral angle, to the 



1. Long extensor of the fore-nrra. 



2. l.ai'-rr extensor of the fore-arm. 



3. Adductor of the nrm, or teres mnjor. 



4. Ix>ng al -due-tor of the arm. 



5. Short abductor of the arm. 



B. BONES OF THE ARM. 



Ilumerus. 



The humerus gives insertion to twenty-four muscles : 

 o. By its superior extremity, to the 



1. Supraspinatus. 



2. Subspinatus. 



3. Subscapularis. 



4. Small scapulo-humeralis. 



5. Sterno-trochineus, or deep pectoral. 

 G. Paiiniculus carnosus. 



6. By its body, to the 



1. Long abductor of the arm. 



2. Short abduclor of tlie arm. 



3. Coraoo-brachial muscle by two points. 



4. Adductor of the arm, or teres major. 



5. Short flexor of the fore-arm, or anterior brachial muscle. 



6. Short extensor of the fore-arm. 



7. Middle extensor of the fore-arm. 



8. Small extensor of the fore-arm, or anconeus muscle. 



9. Anterior extensor of the metacarpus. 



10. Anterior extensor of the phalanges. 



11. Great dorsal muscle. 



12. Mastoido-humeralis muscle. 



13. Sterno-humeralis, or superficial pectoral muscle. 



c. By its inferior extremity, to the 



1. Anterior extensor of the phalanges. 



2. External flexor of the metacarpus. 



3. Oblique flexor of the metacarpus. 



4. Internal flexor of the metacarpus. 



5. Superficial flexor of the phalanges, or perforatus. 



6. Deep flexor of the phalanges, or perfonms. 



C. BONES OF THE POKE-ARM. 



I. Radius. 

 The radius gives insertion : 



a. By its upper extremity, to tl<e 



1. Long flexor of the fore-arm, or brachial biceps. 



2. Anterior extensor of the phalanges. 



3. Lateral extensor of the phalanges. 



b. By Us body, to (lie 



1. Short flexor of the fore-arm, or anterior brarhial muscle. 



2. Oblique extensor of the metacarpus. 



3. Anterior extensor of the phalanges. 

 1 . I .ateral extensor of tlie phalanges. 



5. Deep flexor of tho phalanges, or perforans. 





