Elements of animal physiology, chiefly human . A man pulling (raising) the cond order. The Bones upper end of an inclined ladder fi^om fnVon tfp-toe^against the wall, his foot being placedagainst the foot of the ladder as fulcrum (see fig. ^^y, apair of common fire-tongs used to hold a lump of coal \the treadle of a lathe. The following are examples of this order of levers inthe human body:â 1. The radius of the fore-arm pulled up by the biceps muscle. 2. The hones of the foot, when w. the heel rests onthe ground, andthe toes are pull-ed upwards bythe muscles atthe front of theleg. 339. TheEre
Elements of animal physiology, chiefly human . A man pulling (raising) the cond order. The Bones upper end of an inclined ladder fi^om fnVon tfp-toe^against the wall, his foot being placedagainst the foot of the ladder as fulcrum (see fig. ^^y, apair of common fire-tongs used to hold a lump of coal \the treadle of a lathe. The following are examples of this order of levers inthe human body:â 1. The radius of the fore-arm pulled up by the biceps muscle. 2. The hones of the foot, when w. the heel rests onthe ground, andthe toes are pull-ed upwards bythe muscles atthe front of theleg. 339. TheErect Positionof the Body in Standing is Iig. 68. Lever of the Third Order, maintained by the complicated antagonistic actions ofthe voluntary muscles, which neutralize or balance eachothers contraction, as follows:â (a) The muscles of the calf, acting against the foot as the basisof support of the body, contract, pulhng the body backward, andthus prevent its falling forward. (6) The antagonist muscles of the front of the leg and thigh con-. 152 ANIMAL PHYSIOLOGY. tract, pull the body forwards, and neutralize the action of those ofthe calf. (c) The muscles of the buttocks, spine, and back of the neckneutralize or balance the forward pulling action of those of the legand thigh. {d) The muscles of the front of the abdomen and throat again Muscles of the â - -Front of theThroat. Musces of theAbdomen Muscles of theBack.
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Keywords: ., bookce, bookdecade1870, booksubjectanatomy, booksubjectphysiology
