THE BONES. 1 



CHAPTEK II. 



THE BONES. 



I. The Number Of Bones. There are two hundred and 

 six bones in the human body at maturity. They may b?. 

 arranged as follows (see Fig. 1) : 



I. The bones of the Head : 



1. Brain case (Cranium) . . .(,&). 8 



2. Face 14 



3. Ears 6 



II. The bones of the Trunk : 



1. Spinal column (Vertebra) . . . (c, e) . 26 



2. Ribs 24 



3. Hip bones (Innominata) . . (s) . 2 



4. Breast bone (Sternum) . . . (d) . 1 



5. Tongue bone (Hyoid) . . . " . .1 

 III. The bones of the Upper Extremity : Each 



1. Shoulder (Scapula and Clavicle) . (u) . 2 



2. Arm (Humerus) . . . (t) . 1 



3. Forearm ( Ulna and Radius) . . (/, g) . 2 



4. Wrist (Carpal) (h) . 8 



5. Palm (Metacarpal) . . . (i) . 5 



6. Fingers (Phalanges) . . . (k) . 14 

 IT. The bones of the Lower Extremity : Each 



1. Thigh (Femur) (r) . 1 



2. Knee-pan (Patella) . . . (q) . I 



3. Leg (Tibia and Fibula) . . . (I, m) . 2 



4. Ankle (Tarsal) (n) . 7 



5. Instep (Metatarsal) . . . . (o) . 5 



6. Toes (Phalanges) . . . (p) . 14 

 We may also speak of bones as 



Long The bones of the arms, legs, etc. 

 Short The bones of the fingers, toes, etc. 

 Flat The skull, shoulder blade, etc. 

 Irregular Hip bones, heel bones, etc. 



