. The comparative anatomy of the domesticated animals. Veterinary anatomy. 232 THE MUSCLES OP THE AXILLARY AND CERVICAL REGIONS. 1, Portion of the cuticularis colli; 2, An- terior portion of the mastoido-hume- ralis ; 3, Posterior portion of ditto ; 4, Sterno-maxillaris; 5, Subscapulo-hyoi- deus; 6, Sterno-hyoideus; 7, Sterno- thyroideus; 8, Scalenus; 9, Sterno- humeralis; 10, Sterno-aponeuroticus -, 11, Sterno-trochineus (pectoralis naag- nus); 12, Portion of the fascia en- veloping the coraco-i-adialis, receiving part of the fibres of the sterno-trochi- neus; 13, Sterno-prescapular
. The comparative anatomy of the domesticated animals. Veterinary anatomy. 232 THE MUSCLES OP THE AXILLARY AND CERVICAL REGIONS. 1, Portion of the cuticularis colli; 2, An- terior portion of the mastoido-hume- ralis ; 3, Posterior portion of ditto ; 4, Sterno-maxillaris; 5, Subscapulo-hyoi- deus; 6, Sterno-hyoideus; 7, Sterno- thyroideus; 8, Scalenus; 9, Sterno- humeralis; 10, Sterno-aponeuroticus -, 11, Sterno-trochineus (pectoralis naag- nus); 12, Portion of the fascia en- veloping the coraco-i-adialis, receiving part of the fibres of the sterno-trochi- neus; 13, Sterno-prescapularis; 14, Its terminal aponeurosis. Situation—Comjjosition.—This muscle is situated between the two anterior limbs, occupies the inferior surface of the chest, and is formed by two por- tions which adhere closely to each other, but are yet perfectly distinct. Following the example of Girard, we will describe these as two particular muscles by the names of sterno-humeralis, and sterno- aponeuroticus. A. Sterno-humeralis. — Form — Structure.—This is a short, bulky muscle, flattened above and below, contracted at its termination, and comi^osed almost entirely of thick parallel fibres. Direction and Attachments.—It com- mences on the anterior appendage and the inferior border of the sternum, and is directed obliquely backwards, downwards, and inwards, to reach the anterior ridge of the humerus, where it teiminates by an ajioneurosis common to it, the mas- toido humeralis, and the sterno-aponeuro- ticus. Belations.—It responds, by its ex- ternal face, to the skin, from which it is separated by a cellular layer, and to the inferior extremity of the cuticularis colli; by its internal face, to the sterno- aponeuroticus and sterno-prescapularis. Its anterior border forms, with the mas- toido-humeralis, a triangular space occu- pied by the subcutaneous, or " plate," vein of the arm. Action.— It acts principally as an adductor of the anterior limb. B. Stekno-aponeu
Size: 915px × 2733px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorchauveauaauguste18271, bookcentury1800, bookdecade1870
