AND PHYSIOLOGY. 



131 



tarsus and phalanges. Their 

 names are the Tibialis Anti- 

 cus, Extensor Longus Digi- 

 torum, Peroneus Tertius, and 

 Extensor Proprius Pollicis. 



259. Muscles of the Pos- 

 terior Part of the Leg— The 

 muscles on the reverse por- 

 tion of the leg are three, con- 

 stituting what is known as the 

 calf of the leg. They are the 

 Gastrocnemius, Plantaris, and 

 Soleus. They are attached to 

 the top of the tibia on its pos- 

 terior side, as well as to the 

 lower part of the femur, and 

 all form a conjoint tendon, the 

 largest in the body, and which 

 is attached to the bone of the 

 heel. It is called the tendon 

 of Achilles, because the great 

 Grecian warrior is said to have 

 been killed by the wound of 

 an arrow at this point. The 

 use of these muscles is to raise 

 the body upon the toes, and 

 are the muscles which are of 

 the greatest value to us in the 

 act of walking. Immediately 

 beneath these muscles are six 

 an opposite direction to those 

 leg. They are attached near 

 fibula, and inserted into the 



Fig. 146. 



A View of the Muscles on the Back of th© 

 Leg. V Tendon of the Biceps. 2, Inner 

 Hamstring Tendons. 3, Popliteal Space. 

 4, Gastrocnemius. 5, Soleus. 6, Tendo- 

 Achilles. T, Its Insertion on the Os Calcis. 

 8, Tendons of the Peroneus Longus andl 

 Brevis. 9, Tendons of the Tibialis Posti- 

 cus and Flexor Longus Digitorum behind 

 the Internal Malleolus. 



others which produce motion in 

 upon the anterior portion of the 

 the upper part of the tibia and 

 metatarsal bones and the pha- 



259. State the muscles which constitute the calf of the leg. What is Tendon of Achil- 

 les, and why is it so called ? How many muscles lie deeply covered in the calf of tho 

 leg? 



