ANP 1106 Chapter Notes - Chapter 6: Bone, Medullary Cavity, Intramembranous Ossification

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: John Copeland

Document Summary

Skeleton=made up of cartilages + fibrous membranes but replaced by bone; few remaining found=regions requiring flexible skeletal tissue. Skeletal cartilage: composed of variety of cartilage tissue; consist of water=account for resilience (ability to regain original shape after compressed); no nerves/blood vessels; surrounded by dense layer of irregular ct (perichondrium: resist outward expansion when cartilage compressed; contains. Bv=diffuse nutrients through matrix to cartilage cells=limits cartilage thickness. 3 types of cartilage: hyaline, elastic, fibrocartilage; same basic components=chondrocyte: cells encased=small cavities (lacunae) within extracellular matrix (contain ground substance/fibers. Contain more stretchy elastic fibers; found in 2 skeletal locations= external ear + epiglottis (flap that covers opening of larynx=swallow). Highly compressible; great tensile strength; consist=parallel rows of chondrocytes alternating with thick collagen fibers; occur where pressure + stretch ^; ex: menisci (pad-like cartilage of knee); discs between vertebrae. Cartilage=flexible matrix=accommodate mitosis; ideal tissue==rapidly lay down embryonic skeleton.