ARTERIES 59 



phalangeal joints of three outer toes(p) outer side of base of 

 ist phalanx of great toe (x) (External plantar). [Binds toes 

 together and adducts great toe.] 



Flexor brevis minimi digiti : base of 5th metatarsal, sheath 

 of peroneus longus(p) outer side of base of ist phalanx of 

 little toe(T) (External plantar). [Flexes metatarso-phalangeal 

 joint of the little toe.] 



FOOT, PLANTAR AND DORSAL INTEROSSEOUS REGION. 



Interossei dorsales (4) : by two heads from adjacent sides 

 of metatarsal bones(p) side of and dorsal extensor expansion 

 on tst phalanx thus : the inner two go to and toe, one on 

 each side, outer two to outer sides of 3rd and 4th toes respec- 

 tively^) (External plantar). [Abduct from middle line of 

 2nd toe.] 



Interossei plantares (3) : under and inner surfaces of three 

 outer metatarsal bones(p) inner side of base of ist phalanx 

 of same toes(T), and dorsal expansion on ist phalanx(T) 

 (External plantar). [Adduct to middle line of 2nd toe.] 



THE ARTERIES. 



ARTERIES OF HEAD AND NECK. 



THE SUBCLAVIAN ARTERIES. Extent : Right, from innomi- 

 nate opposite right sterno-clavicular articulation. Left, from 

 transverse part of arch of aorta. Both pass into neck, arching 

 outwards over pleura; lying on first rib, between scalenus 

 anticus and medius, to end at outer border of it. 



Divisions : The scalenus anticus, passing anteriorly to artery, 

 'is 'used to divide it into three parts, viz. : 



ist part, from origin of vessel to inner border of scalenus 

 anticus. 



2nd part, portion posterior to scalenus anticus. 



3rd part, from outer edge of scalenus to external border of 

 ist rib. 



