154 



fascia, called the ligamentum vaginale. In this canal are found the flexor ten- 

 dons, invested by a synovia! membrane called theca. 



ANTERIOR PART. 



Locate on the cadaver : (i) The clavicle ; (2) the sternum ; (3) sterno-clavicu- 

 lar articulation ; (4) acromio-clavicular articulation ; (5) the acromion ; (6) the 

 coracoid process ; (7) the greater tuberosity of the humerus ; (8) the lesser 

 tuberosity of the humerus ; (9) the internal condyle ; (10) the external condyle ; 

 (i i) the radial head 5(12) the clefts of the fingers ; (13) the thenar eminence ; 



INTERNAL 

 CUTANEOUS OF 

 MUSCULO- 

 SPIRAL 



INTERNAL 

 CUTANEOUS 



PALMAR 



CUTANEOUS OF 



MEDIAN 

 PALMAR 



CUTANEOUS OF 



ULNAR 



SUPRA- 



ACROMIAL 



CIRCUMFLEX 



INTERCOSTO- 

 HUMERAL 



TWIG OF 

 INTERNAL 



CUTANEOUS 



CIRCUM-\ 

 FLEX 1 



EXTERNAL 

 CUTANEOUS OF 



MUSCULO- 



SPIRAL 



MUSCULO- 

 CUTANEOUS 



EXTF.RNAL 

 CUTANEOUS 



OF 



MUSCULO- 

 SPIRAL 



MUSCULO- 

 CUTANEOU* 



RADIAL 



PALMAR 

 CUTANEOUS 

 OF RADIAL 



SUPRA- 

 ACROMIAL 



INTERNAL 



cr r TA\EOUS OF 



MUSCULO- 

 SPIRAL 

 INTERCOSTO- 

 HL'MERAL 



NERVE OF 

 WRISBERQ 



INTERNA L 

 CUTANEOUS 



ULNAR 



FIG. 106. DISTRIBUTION OF CUTANEOUS NERVES ON THE ANTERIOR AND POSTERIOR .Asn-rrs 



OF THE SUPERIOR EXTREMITY. 



(14) the hypothenar eminence; (15) the metacarpo-phalangeal articulation; 

 (16) the phalangeal articulations; (17) the pisiform; (18) the unciform pro- 

 cess of the unciform bone. 



Incisions. (i) From the acromion to the end of the middle finger ; (-2) from 

 the sterno-clavicular articulation to the acromion ; (3) from condyle to condyle ; 

 (4 through the metacarpo-phalangeal crease. 



NOTE. In making these incisions care must be taken not to cut too deeply, 

 in order to avoid doing violence to the cutaneous vessels and nerves. Now 

 remove the skin very carefully and expose the following cutaneous nerves and 

 veins : 



I. The ccpJialic vein a continuation of the radial above the elbow. (Fig. 105.) 



