476 



7. M. flexor proprius hallucis, . b, 0-02 oz. 



This muscle arises from the fascia covering the back of the poplitceus, 

 with a few fibres running towards the head of the fibula ; and is in- 

 serted into the os calcis, on the inner side of the groove made for the 

 passage of the tendon of the flexor digitorum perforans. 



8. M. tibialis anticus, a, 4*46 oz. 



b, . . 1-911 n _ Q 



c ; . . 1-24) • • 1,58 ° z - 



Inserted into the inner side of the near ends of the metatarsals of the 

 1st and 2nd toes (small). 



9. M. extensor communis digitorum, a, 1*23 oz. 



b ' ' ' °' 51 \ 0-43 oz 



Distributed to the 3rd and 4th toes (large). 



10. M. extensor hallucis, . . . b, 0'02 oz. 



This little muscle takes origin from inner side of the head of the 

 tibia, below the tibialis anticus, and its tendon, crossing the backs of the 

 metatarsal bones, is distributed by two smaller tendons to the backs of 

 the two inner toes (used chiefly for scratching), of which, with the per- 

 onceus tertius, it is the proper extensor. 



D. — Muscles of the Shoulder. 



1. M. trapezius, a, 0*42 oz. 



c b ; : : til}- ■ *»~ 



This muscle is intimately blended with the cutaneous muscles of 

 the neck, with the omo-atlanticus and latissimus dor si ; it takes its 

 origin from the last three cervical and first six dorsal vertebrae. 



2. M. rhomboideus, a, . . . . . . 0*17 oz. 



b ' • • . 018 oz. 



„ c, . . 0-18J 



Arises from the occiput, from all the cervical, and first three dorsal 

 vertebrae. 



3. M. sterno-cleido-mastoideus, a, 



4. If. omo-atlanticus, a, 



b, 



0-331 

 0-31/ ' 



0-251 

 0-26J * 



0-39 oz. 

 0-32 oz. 



0 45 oz. 

 0-26 oz. 



Arises from the transverse processes of the 1st, 2nd, and 3rd cer- 

 vical vertebrae, and is inserted into the anterior fqurth of the spine 

 of scapula and whole of clavicle. 



