ANP 1106 Lecture Notes - Lecture 4: Muscle Contraction, Plane Joint, Metacarpal Bones

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Joanne Savory

Document Summary

Articulation: site where two or more bones meet. Functions: hold skeleton together, gives skeleton mobility. Classification: function: how much freedom of movement is allowed, synarthroses: immovable, amphiarthroses: slightly movable, diarthroses: freely moveable, structure: what holds the joints together, fibrous, cartilaginous, synovial. No joint cavity very little to no movement. Tibia and fibula: gomphoses, bones joined by fibrous ct, no joint cavity, peg-in-socket, only example: tooth in bony socket, fibrous connection is the periodontal ligament lines the cavity that the tooth is in. Synchondroses: most are immovable, bar or plate of hyaline cartilage unites the bones, areas of growth, ex. Symphysis: articular surfaces covered with hyaline cartilage, linking plate of fibrocartilage, strength with flexibility, ex. Diarthrotic lots of movement, but not as stable as fibrous or cartilaginous joints. Distinguishing geatures: articular (hyaline) cartilage: cushioning so bone not crushed, joint (synovial) cavity: small, fluid filled, articular capsule, two layers, outer fibrous capsule made of denser irregular ct.