ANAT 5086 Study Guide - Final Guide: Arthrodesis, Temporal Bone, Diplo
Document Summary
Bones are all the more brittle as they are more impregnated with limestone. This explains why the bones of old people, in whom this impregnation is strong, are very fragile while those of children enjoy a relatively great elasticity: the bone forms bony lamellae whose arrangement varies with the bone considered. When the bone lamellae are very tight, the bone takes on a homogeneous appearance: this is the compact substance. 2 - long bones like femurs and humerus. The long bones are made up of an elongated body, more or less tubular (prysmatic) or cylindrical, called the diaphysis, as well as two ends called epiphyses. The diaphysis is formed by a peripheral layer, more or less thick, of compact bone substance (compact bone). Its central part is generally occupied by a cavity, the medullary cavity, in which is housed the bone marrow which belongs to the hematopoietic organs (allowing the formation of blood cells).
