LABORATORY MANUAL 



OF 



HUMAN ANATOMY 



UPPER EXTREMITY 



MAKE four drawings : (a) anterior view of the upper extrem- 

 ity and the wall of the thorax, (b) posterior view of the same, (c) 

 lateral view of the upper extremity, (d) medial view of the same. 



In the drawings show that the upper extremity (extremitas 

 superior) is attached to the chest (thorax) in the clavicular and 

 scapular regions. Note the prominence of the shoulder (axilla) 1 

 and the projection in its upper lateral part (acromion). Con- 

 tinuous with the shoulder is the rounded upper arm (brachium) ; 

 beneath it, between the brachium and the thorax, is the axillary 

 fossa (fossa axillaris). Draw in its anterior and posterior 

 bounding folds (plica axillaris anterior, plica axillaris poste- 

 rior). Show how the forearm (antibrachium) joins the brachium 

 at the elbow (cubitus) ; illustrate the change in size and shape 

 of the antibrachium distalward. In the drawings of the brach- 

 ium label the anterior surface (fades anterior), posterior sur- 

 face (fades posterior), lateral surface (fades lateralis), and 

 medial surface (fades medialis), also the sulcus bidpitalis lat- 

 er alls and the sulcus bidpitalis medialis; in the forearm distin- 

 guish the radial side or border (mar go radialis), the ulnar side 

 (mar go ulnaris), the dorsal surface (fades dorsalis), and the 

 volar surface (fades volaris). 



Note how the hand (manus) is attached to the antibrachium 

 by the narrower wrist (carpus). Distinguish the proximal por- 

 tion of the hand (metacarpus) from the subdivided distal por- 

 tion, the fingers (digiti manus). Number the digits from the 

 thumb side. The thumb is the first (digitus L, or pollex), the 

 index-finger is the second (digitus II., or index), the middle 



1 This is the proper usage of " axilla." In English texts it is often used as 

 synonymous with " fossa axillaris." 



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