Chapter III: Muscles of the Arm

The =biceps= is smaller and less tendinous, and is situated more internally than in the horse. The tendon of origin is flat, and is bound down in the bicipital groove by a fibrous band. (In the sheep the tendon is round and passes through the shoulder joint.)

FIG. 212.—MUSCLES OF ANTIBRACHIUM AND MANUS OF OX, ANTERIOR VIEW.

_a_, Extensor carpi radialis; _b_, extensor digiti tertii; _c_,
extensor digitalis communis; _d_, extensor digiti quarti (tendon);
_f_, extensor carpi obliquus; _g_, brachialis; _12′_, metacarpal
tuberosity. (After Ellenberger-Baum, Anat. für Künstler.)
]

FIG. 213.—MUSCLES OF ANTIBRACHIUM AND MANUS OF OX, EXTERNAL VIEW.

_a_, Extensor carpi radialis; _b_, extensor digiti tertii; _c_, common
or anterior digital extensor; _d_, extensor digiti quarti; _e_,
flexor carpi externus; _f_, extensor carpi obliquus; _f′_, ulnar
head of flexor carpi medius; _g_, brachialis; _h_, interosseus
medius or suspensory ligament; _i_, flexor tendons; _i′_, branch of
_h_, to superficial flexor tendon; _8_, olecranon; _11_, accessory
carpal bone; _12′_, metacarpal tuberosity. (After Ellenberger-Baum,
Anat. für Künstler.)
]

FIG. 214.—MUSCLES OF ANTIBRACHIUM AND MANUS OF OX, INTERNAL VIEW.

_a_, Extensor carpi radialis; _b_, tendon of extensor digiti tertii;
_f_, tendon of extensor carpi obliquus; _g_, brachialis; _h_,
interosseus medius or suspensory ligament; _i_, flexor tendons;
_i′_, branch of _h_; _k_, flexor carpi internus; _l_, flexor carpi
medius; _m_, superficial digital flexor. (After Ellenberger-Baum,
Anat. für Künstler.)
]

The internal head of the =triceps= is more developed than in the horse.

The =tensor fasciæ antibrachii= is a slender muscle.