Human anatomy joints and muscles
Circumduction
Around, should, hip joint
Synovial joint
Articulating bones are separated by a fluid containing joint cavity; all joints of limbs, freely movable diarthroses
Bursae
Connective tissue sacs lined with synovial membranes that act as cushions in places where friction develops
Flexion
Decreases angle between articulating bones
Ligament
Dense regular connective tissue connecting BONE TO BONE
Tendon
Dense regular connective tissue connecting MUSCLE TO BONE
Diarthrotic
Freely moveable
Synovial fluid
High hyaluronic acid content, egg white consistency; fluid forced from cartilage when compressed, seeps back into cavity when compression lessened
Synarthrotic
Immovable joints
Arthritis
Inflammation of joints; 100 different types
Elevation
Lifting part superiorly; chewing, shoulder shrug
Sprain
Ligaments torn or stretched
Adduction
Movement toward midline
Abduction
Moving king away from midline or median plane
Strain
Muscle pull
Extension
Reverse of Flexion, increase angle
Joints
Site where two bones meet; give skeleton mobility and hold Skelton together; weakest part of the skeleton
Origin
The end of the muscle that attaches to the stationary bone
Insertion
The end of the muscle that moves
Suture
a fairly rigid joint between two or more hard elements of an organism, with or without significant overlap of the elements
Ball-in-socket
a rounded head fits into a rounded cavity, allowing a wide range of movement
Hinge joint
formed between two or more bones where the bones can only move along one axis to flex or extend
Menisci
is a crescent-shaped fibrocartilaginous structure that, in contrast to articular disks, only partly divides a joint cavity