Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals . 4, The extensor carpi ulnaris.—This muscle extends the hand on thewrist. 15, Flexor carpi ulnaris. 10, Tendon of the long extensor of the thumb. /, Annular ligament of the carpus. Muscles of the Inferior Extremities.—17, The gluteus maximus.—This large, thickmuscle is of greater volume than any other in the body, and is the principal agent in pre-serving its equilibrium. It extends from the iliac bones
Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals . 4, The extensor carpi ulnaris.—This muscle extends the hand on thewrist. 15, Flexor carpi ulnaris. 10, Tendon of the long extensor of the thumb. /, Annular ligament of the carpus. Muscles of the Inferior Extremities.—17, The gluteus maximus.—This large, thickmuscle is of greater volume than any other in the body, and is the principal agent in pre-serving its equilibrium. It extends from the iliac bones to the femur, and acts as an ex-tensor of the thigh. 18, The biceps femoris.—This strong muscle, extending from thepelvis to the tibia, bends the leg, and also extends the pelvis upon the leg, keeping iterect. 10, The semi-tendinosus.—This muscle bends the leg upon the thigh, turns thepoint of the foot downward and inward, and keeps the pelvis erect when standing. 20,The vastus externus. 21,21, The triceps sura?, consisting of three portions—the gastrocne-mii, a, b, and the soleus, c; it terminates in the strong tendon of Achilles, d. It forms theextensor muscle of the ANIMAL MOTION. 233 foot of the other one are raised and carried forward to-gether ; and when these are set down, the other fore andhind foot are raised and advanced. 470. In leaping, thebodj is projected intothe air by the suddenextension of the joints,especially those of thehinder parts of the bodywhich have been previ-ously bent, and havingtraversed a greater orless distance, the bodycomes again to theground. The hare, rab-bit, squirrel, kangaroo,&c, are especially adap-ted to this kind of pro-gression by the lengthof the posterior extrem-ities, which are nearly double that of the anterior, as maybe seen in fig. 64.
Size: 1193px × 2095px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectphysiologicalprocess
