502 



COLLEGE ZOOLOGY 



Parietal 



Lacrimal 

 Ethmoid 



Zygomatic 

 Maxilla 



Temporal 

 Suture 



Occipital 



Mandible 



Figure 370. Skull of man. Note the distinct sutures between the bones of the cranium; these 

 sutures close and are nearly or completely obliterated in old age. 



Neural spine 



Transverse process 



Neural 

 cono 



Articular 

 process 



Centrum 



Top view 



Figure 371. Vertebrae of man. Their structure makes possible a flexible vertebral column. 

 Movements can be made forward, backward, and sidewise. 



hence called floating ribs. Some individuals 

 have an extra rib which is called a gorilla 

 rib because it represents the normal condi- 

 tion in gorillas and chimpanzees. 



The bones of the appendicular skeleton 

 are those of the shoulder (pectoral) girdle 



(4), pelvic girdle (2), upper limbs (60), 

 and lower limbs (60). The shoulder girdle 

 consists of 2 clavicles and 2 scapulae. The 

 bones in each arm are the humerus, ulna, 

 radius, carpals (8), metacarpals (5), and 

 phalanges (14). 



