ANP 1106 Lecture Notes - Lecture 3: Anterior Cranial Fossa, Middle Cranial Fossa, Lambdoid Suture

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

Document Summary

Topic 3: anatomy of the skeletal system (chapter 6: bones & skeleton tissue) : bony tissues: Bone: living dynamic tissue/responds to environment; 1) reacts to amount of applied force=increasing density & roughening bone amount; 2) stores calcium. Skeletal cartilage: surrounded by dense irregular ct=perichondrium: cartilage compressed=outward expansion resistance; limits cartilage thickness; bv=diffuse nutrients to cartilage cells). 1) no nerve/blood vessels; 2) ground substance; 3) collagen fibers (sometimes elastic fibers); 4) 3 types: hyaline, elastic, fibrocartilage= actively form chondroblast (immature cartilage cell); maintained=chondrocyte (mature cartilage cell); lacunae (localized chondrocyte clusters in cartilage). Most abundant; matrix contain fine collagen fibers; chondrocyte=spherical=1-10% volume. Loc: embryonic skeleton, long bone ends (epiphyseal plate=growing children), costal cartilage of ribs, nose, trachea, & larynx cartilage; fcn: support/reinforce; resilient cushioning; resist compressive stress. 1) articular cartilages (moveable joint bone ends); 2) costal cartilages (connect ribs=sternum (breastbone); 3) respiratory cartilages (form larynx skeleton; reinforce resp. passageways; 4) nasal cartilage (support ext. nose).