. Fisiologia umana : progettato per le scuole superiori e per la lettura generale. O grandi muscoli che muovono la coscia. A o e PF come visto sulla coscia destra, e a m, asseen sulla sinistra, sono tre grandi muscoli, che sono fissati al ginocchia, e servono a gettare la gamba in avanti come descritto § 304. A q è il tendine che forma il cordino esterno,e a r sono i due tendini che formano quello interno. I Themuscles ai quali appartengono questi tendini servono a piegare la gamba sulla coscia, trascinandola verso l'alto e verso l'indietro. A s isil muscolo che fa la massa del vitello del l

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. Human physiology : designed for colleges and the higher classes in schools, and for general reading. o large muscles that move thethigh. At o and pf as seen on the right thigh, and at m, asseen on the left, are three large muscles, which are fastened tothe kneepan, and serve to throw the leg forward as describedin § 304. At q is the tendon that forms the outer hamstring, and at r are the two tendons which form the inner one. Themuscles to which these tendons belong, serve to bend the legupon the thigh, drawing it upward and backward. At s isthe muscle which makes the bulk of the calf of the leg. Itlifts the heel upward and backward, and it is seen in action inthe right leg of the Figure. Its strong tendon which is at-tached to the top of the heel bone is called, on account of itsstrength, the tendon of Achilles. This muscle is in Fig. 109, the power P which raises the weight of the body, W, on thefulcrum, F, as the heel is raised from the ground in walking.313. In Fig. 123 you have a rear view of the muscles. At THE MUSCLES. 218 Rear view of the external layer of the muscles FIG. 123.. KEAR VIEW OF THE MUSCLES. 214 HUMAN PHYSIOLOGY. Some muscles are very small. Symmetrical arrangement of the musries. a is a very broad muscle, which rising from the back is attachedto different parts of the shoulder-blade. You can see thatthis irregularly shaped muscle, will move the shoulder-bladevariously, according to the various action of the different fibresof the muscle, which run in so different directions. At c yousee the rear part of the muscle that raises the arm. At b isthe extensive muscle that you saw in Fig. 122 at g, whichdraws the arm backward. At e is a large muscle that drawsthe thigh backward. At g, h, and / are the muscles whosetendons form the two hamstrings. At i is the muscle thatforma the calf of the leg, and raises the heel. 314. I have thus described to you a few of the principalmuscles in the body, that you may have some idea of the modesin which they act,

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1860
• bookpublishernewyorksheldon
• bubo