KINESIOL 1A03 Lecture Notes - Lecture 3: Intramembranous Ossification, Diaphysis, Osteon
17 Dec 2017
School
Department
Course
Professor
Document Summary
Bone is hard, rigid. (hardest tissue in body, dynamic = always changing) Produced by muscles on bones, via tendons (muscle to bone: storage: Ca and p stored and releases as needed. Not enough from diet: bone breaks down to release ca. Adipose tissue (fat) stored in bone marrow cavities. Yellow bone marrow: fat in bones: blood cell production: Ground substance: proteoglycans trap water to give it resiliency. Hyaline cartilage: most abundant type, ends of every bone that makes a joint, makes bridge of nose and septum, rings of trachea, lots of collagen protein. Elastic cartilage: more flexible, in ears, more elastin protein. Fibrocartilage: strongest type, on weight supporting joints, in between vertebrae, disks in knee joints (minuscus) ****cartilage makes up the skeleton of a fetus. ****differences in cartilage types come from protein content. ****matrix is fluid because of high water content and proteoglycans ability to trap water. Chondroblast builds matrix around itself, gets stuck and is now called chondrocyte.
