BIO 167 Lecture Notes - Lecture 8: Collagen, Ulna, Muscle Tone
26 Apr 2021
School
Department
Course
Professor
Document Summary
Joints: articulation, site where two or more bones meet, functions of joints, give skeleton mobility, hold skeleton together, classifications, functional amount of movement allowed, structural material binding bones together. Functional classification of joints: based on amount of movement joint allows, three functional classifications, synarthroses immovable joints, amphiarthroses slightly movable joints, some give , diarthroses freely moveable joints. Structural classification of joints: based on materials joining bones together, presence/absence of joint cavity, three structural classifications, fibrous joints, cartilaginous joints, synovial joints. Fibrous joints: bones joined by collagen fibers of connective tissue, no joint cavity, most synarthrotic. Depends on length of ct fibers: three types, sutures, syndesmoses, gomphoses. Fibrous joints: sutures seams , rigid, interlocking joints, immovable joint for protection of brain, short connective tissue fibers, continuous with periosteum, allows for growth of skull during youth, sutures ossify and fuse in middle age, now termed synostoses.
