THE MUSCLES 93 



(4) Acromiotrapezius (Fig. 54) (Trapezius superior) ; neural 

 spines of cervical vertebrae to spine of scapula; holds scapulae 

 together. 



(5) Clavotrapezius (Fig. 54); occipital bone and fascia of 

 middorsal line of neck to clavicle; pulls scapula upward and 

 forward. This muscle continues to the humerus as the clavo- 

 brachial. Both together are frequently described as one muscle, 

 the cephalohiimcral or ccphalohrachial. 



(6) Occipitoscapularis (Fig. 48, /) (Levator scapulae dorsalis 

 or Rhomboideus capitis); lambdoidal ridge to scapula; draws 

 scapula forward and rotates it. 



(7) Rhomboideus (Fig. 54) (Rhomboideus major and minor 

 of man); spines of adjacent cervical and thoracic vertebrae to 

 scapula; draws scapulae dorsomediad. 



(8) Levator scapulae ventralis (Fig. 54) (Levator claviculae) ; 

 atlas and basioccipital to metacromion and infraspinatus fossa; 

 pulls scapula craniad. 



(9) Cleidomastoideus (Fig. 48) (clavicular portion of sterno- 

 cleidomastoid of man); mastoid process to clavicle; turns head 

 and depresses snout. 



(10) Latissimus dorsi; (Fig. 54); neural spines from fourth 

 thoracic to sixth lumbar vertebrae to shaft of humerus; draws 

 arm dorsocaudad. 



(11) Serratus anterior (Fig. 48) (Serratus magnus); first nine 

 or ten ribs to scapula; depressor of scapula. 



(12) Levator scapulae (Fig. 48); last five cervical vertebra to 

 scapula; draws scapula cranio ven trad. Continuation forward 

 of serratus anterior and scarcely separable from it. 



BREAST MUSCLES 



(13) Pectoantibrachialis (Fig. 48); lateral surface of manu- 

 brium to superficial fascia of forearm near elbow; aids pectoralis 

 group and is the most superficial of this group. 



(14) Pectoralis major (Fig. 48) (Ectopectoralis) ; two layers, 

 the superficial from manubrium and raphe anterior to it, the 



