. Public School Physiology and Temperance. rds its fellow atthe knee. It is crowned at the upper end by a head andneck. The neck forms an angle with the shaft, like the turnon a walking-cane, so as to bring the head into the deepsocket in the pelvic bone. The upper half of this ball-likehead is covered with cartilage, and fits accurately into thesocket, forming a ball and socket joint, much like the one atthe shoulder, but deeper and stronger, though more limitedin its movements. The head of the bone is held in placeby strong ligaments attached around the neck. It is also THE BONES. 31 steadie
. Public School Physiology and Temperance. rds its fellow atthe knee. It is crowned at the upper end by a head andneck. The neck forms an angle with the shaft, like the turnon a walking-cane, so as to bring the head into the deepsocket in the pelvic bone. The upper half of this ball-likehead is covered with cartilage, and fits accurately into thesocket, forming a ball and socket joint, much like the one atthe shoulder, but deeper and stronger, though more limitedin its movements. The head of the bone is held in placeby strong ligaments attached around the neck. It is also THE BONES. 31 steadied or swung in the cavity by a strong ligament runningup from the base of the cavity to the summit of the head,which holds it in place, and prevents jars and of the muscles, also, which move the thigh bone passover this joint, and help to keep it in place. 28. The Knee.—The lower end of the thigh bone is solarge as really to suggest the idea of a war-club. Indeed,some savage tribes use the thigh bone as a weapon of FiO. 10.—The Mechanism of the Hip Joint. The large end of this bone rests upon the broad, flat end ofthe shin bone, forming the knee joint. This hinge joint isprotected in front by a flat three-sided bone, the patella, orknee-pan. Although the knee is greatly exposed, the broadjoint surface, with its strong ligaments and tendons, enablesit to resist violence, and dislocation does not frequentlyhappen. Indeed, fracture of one of the bones is more likelyto occur. 32 PHYSIOLOGY AND TEMPERANCE. 29. The Ankle.—This is also a hinge joint, and is formedby the lower ends of the two bones of the leg clasping be-tween them, as sugar-tongs clasp a piece of sugar, the highestbone of the arch of the foot. The larger of the two leg bonesis called the tibia, or shin bone. It has a sharp border downthe front, which, being covered only by skin, is very sensitiveto the touch, as every child knows who bruises his shins.
Size: 1895px × 1318px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893
