44 PHYSIOLOGY AND TEMPERANCE. 



muscles would give. In passing over exposed parts and over 

 joints the tendons occupy less space, and are less sensitive to 

 pain when pressed upon. 



FIG. 18. The Muscles and Tendons of the Hand. 



The tendons vary in length, in size and in strength, accord- 

 ing to the work they have to do. The longest and strongest 

 tendon in the body is the one by which the large muscles of 

 the calf of the leg draw upon the heel. Stand upon the toes, 

 and this tendon can be distinctly felt above the heel. It is 

 called the tendon of Achilles. The large muscles at the back 

 part of the thigh are attached by tendons to the bones of the 

 leg. These stand out when we flex the knee. They form the 

 hamstrings. The tendons of the hand and those of the foot 

 can be very distinctly seen as we move the fingers or toes. 

 The tendon of the biceps can be easily felt in front of the 

 elbow. Some muscles have very short tendons. The large 

 triangular muscle fitting over the shoulder, and called the 

 deltoid, is attached by a short tendon to the arm bone. 



