The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . exor muscles of the toes are found. Thisstructure conduces to the elasticity of the step, and theweight of the body is transmitted to the ground by thespring of the arch, in a way to prevent the injury of nu-merous organs, by a sudden jar. Each one of them hasa specific name, viz. vs calcis, the heel; astragalus, beingpart of the ankle joint, named from its likeness to a blockused by the Greeks, in playing a game of chance ; cuboides,or square bone ; na
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . exor muscles of the toes are found. Thisstructure conduces to the elasticity of the step, and theweight of the body is transmitted to the ground by thespring of the arch, in a way to prevent the injury of nu-merous organs, by a sudden jar. Each one of them hasa specific name, viz. vs calcis, the heel; astragalus, beingpart of the ankle joint, named from its likeness to a blockused by the Greeks, in playing a game of chance ; cuboides,or square bone ; naviculare, the boat shaped ; and cunei-forme, or the wedge shaped bone. As in the hand, between the instep and toes, is themetatarsus, in which are five bones, placed like the sticksof a fan, to be articulated with the first row of the bonesof the toes. Precisely as the short blocks of bones are arranged inthe thumb, so they are in the great toe, being, however,proportionably larger. There are two in this and three 34 ANATOMICAL CLASS BOOK. in each of the four remaining toes, —the whole of whichare phalanges, being fourteen in all. b -. Explanation of Fig. 23. This represents the bones ofone toe, as they stand, in relationto each other — a the metatarsalpart, concealed in the muscles, andbed the three phalanges. Fig. 24 is the skeleton of thegreat toe: a the metatarsal por-tion, and b c the phalanges. Sesamoid bones, considerably larger than in the thumb,are discoverable on the under side of the first joint of thelarge toe. skin of the bones.—Periosteum. Over every bone is a thin, white covering, the perioste-um, closely investing it. Its use is to conduct the nutri-cious vessels and nerves into the substance of the serves also for the attachment of the muscles, whichcould not otherwise be fastened to the smooth apparently insensible, it is amply furnished withnerves, arteries, and veins, but its vitality is very low. AiNATOMICAL CLASS BOOK. 35 growt
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
