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Ch.8 Joints

involves bending a joint so as to decrease the angle of the joint flexion
involves straitening a joint, increasing the angle between the bones extension
the extremem extension of a joint beyond its normally straight position hyperextension
moving the toes upward dorsiflexion
moving the toes downward plantar flexion
movement of a body part away from the midline of the body abduction
movement of body part toward the midline of the body adduction
distal end of an appendage, such as the arm or leg, moves in a circle circumduction
movement that turns the palm upward supination
movement that turns the palm downward pronation
foot movement that turns the sole medially, toward the other foot inversion
foot movement that turns the sole laterall, away from the other foot eversion
moves part forward -ex. jaw protraction
moves part backward -ex. jaw retraction
also called synarthroses fibrous joints
also called amphiarthroses cartilaginous joints
what joints result when callagen fibers from one bone penetrate the adjacent bone fibrous joints
once growth is complete, the bones of the skell knit together securley, offering protection to the brain adult skull suture joints are fibrous joints
two bones are joined by cartilage cartilaginous joints
slightly movable cartilaginous joints
also called diarthroses synovial joints
freely movable synovial joints
small sacs filled with synovial fluid joints: knee shoulder, and elbow BURSA
busae facilitates movement and eases friction
what are ligaments tough cords of connective tissue help bind the bones more firmly together
a thin layer of hyaline cartilage covers the bone surfaces. in combination with synovial fluid, permits friction-free movement. articular cartilage
joint cavity small space between the bones allows for freedom of movement
slippery, viscous fluid that has the consistency of an egg white synovial fluid
what lubricates the joint, nourishes the cartilage, and contains phagocytes to remove debris synovial fluid
moist, slippery membrane lines the inside of th ejoint capsule synovial membrane
joint capsule extending from the periosteum of each of the articulating bones is a sheet of connective tissue thatencloses the joint cavity
Created by: ashley032609