AND PHYSIOLOGY. 



65 



in form, making, by a decided projection, the heel. Directly 

 beneath and anterior to the last two, are found the Cuboid 

 (cube-shaped) and the Scaphoid (boat-shaped), and anterior 

 to these the three Cuneiform (wedge-shaped), articulating 

 with the metatarsal bones in front. 



144. Metatarsal Bones, — These are five in number, and 

 correspond with those in the metacarpus, except that the one 

 in the first toe is of equal length with the others, and does not 

 admit of so free motion as that of the thumb. 



145. The Phalanges. — The Phalanges of the foot are also 

 like those of the hand, except that in the foot the first row is 

 the longest, while in the hand it is in the third row or second 

 finger. 



146. Sesamoid Bones. — Besides the bones already men- 

 tioned, there are frequently found in stout adult men small 

 bones, or portions of bony matter called Sesamoid Bones, 

 from their resemblance to the Sesamum, a kind of bean. 

 And although they are not constant either in individuals, or 

 in the same places in the individual, yet anatomists are 

 accustomed to reckon eight, or four pairs as the normal 

 number. They are all found enclosed in tendons, and serve 

 like the patella to change the direction of motion. They 

 are found at the point where the tendon glides over the 

 joint made by the phalanges and metatarsus of the foot, 

 and the metacarpus of the hand, in the tendon which plays 

 over the under surface of the cuboid bone in the foot ; and 

 also in the tendons that glide over the lower condyles of 

 the femur. 



147. Bones of the Ear. — In the Ear are three bones 

 which will be more appropriately described with the organ 

 itself. 



148. Number of Bones. Single Bones.— Of the 240 



144. How many Metatarsal Bonos ? 145. How many Pln.langes of the Foot? How 

 do they differ from those of the hand? 146. Describe Sesamoid Hones. How many are 

 there, and where are they generally found ? 147. How many bones of the Ear ? 



