MUSCULOSKELETAL SYSTEM
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Created by:
jayceerazon23 on June 24, 2012
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SCOTT GILES
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21 terms
Terms | Definitions |
|---|---|
 suture | an immovable joint (especially between the bones of the skull) |
| syndesmosis | connected by a ligament or membrane that allows some movement (radius and ulna or tibia and fibula) |
| gomphosis | Bones fit together like a peg in a hole, secured by fibrous tissue |
| synchondrosis | Type of joint in which bones are joined by hyaline cartilage sternum and true rib bone |
| synovial joint | a joint so articulated as to move freely |
| uniaxial joint | Bones are free to move in one plane, around one axis (one direction), ex: Hinge joint - flexion/extension, Pivot joint |
| biaxial joint | bones are free to move in two planes around two axes (two directions), ex: Condyloid and Saddle - flexion/extension & abduction/adduction |
| multi-axial joint | movement occurs in three planes and around three axes such as plane and ball and socket joints |
| free nerve ending | dendrites that lack any obvious structural specialization; used to generate sensations of warmth, coolness, pain, tickle, and itch, microscopic sensory nerve endings in the skin that are not connected to any specific sensory receptor |
| golgi ligament | sensitivity to tension and stretch |
| pacinian corpuscle | a specialized bulblike nerve ending located in the subcutaneous tissue of the skin. sensitivity of high frequency vibration |
| golgi-mazzoni | located in joint capsules, sensitivity by compression and weight bearing but not motion, no role in proprioception |
| ruffini ending | a skin receptor cell type that detects stretching of the skin., slow adapting, stretching of skin/bending of fingernails |
| shoulder | a ball-and-socket joint between the head of the humerus and a cavity of the scapula, the part of the body between the neck and the upper arm |
| glenohumeral joint | Synovial ball and socket joint; Between the glenoid fossa of the scapula and the head of the humerus; Large, loose joint capsule allows a lot of motion, but provides little stability |
| shoulder articulation | Sternoclavicular joint (S/C) Acromioclavicular joint (A/C) Glenohumeral joint (G/H) Scapulothoracic articulation (S/T) |
| sternoclavicular | connects sternal (medial) end of clavicle with manubrium; has anterior and posterior portions; is a complete disc at the sternoclavicular articulation (important for shock absorption) |
| acromioclavicular | connects acromion of scapula with lateral clavicle; has superior and inferior portions (has an incomplete articular disc that projects into the joint from the superior part of the articular capsule) |
| shoulder flexion muscle | 180, Anterior Deltoid, Coracobrachialis, Pec Major, Biceps Brachii, Supraspinatus |
| shoulder extension muscle | 60 degrees, Latissimus Dorsi, Deltoid (Posterior Fibers), Teres Major |
| shoulder abduction muscle | middle deltoid, supraspinatus, C5, 180 |
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