anatomy: exam 1
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Created by:
nowordforit on September 6, 2010
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24 terms
Terms | Definitions |
|---|---|
 fibrous joints | Almost no movement -> immobile joints. components are united by fibrous tissue. three kinds: sutures,syndesmoses, & gomphoses |
| sutures | major form of fibrous joints in the skull.Thin layer of dense irregular connective tissue unites adjacent bones derived mostly from intramembranous ossification process. type of fibrous joint. |
| syndesmoses | held together by collagenous fibers of sheets of fibrous tissue (interosseous ligaments). ligaments can be very short -> minimal movement, or long -> some movement. type of fibrous joint. |
| gomphoses | occur between teeth and supporting bones of the jaws. type of fibrous joint. |
| cartilaginous joints | allow limited movement in response to twisting or compression. fibrocartilage or hyaline cartilage. 2 types: synchondrosis & symphysis |
| synchondrosis | hyaline cartilage joint/primary cartilaginous joint. temporary - cartilage interface soon converted to bone before animal matures. type of cartilaginous joint |
| symphysis | fibrocartilaginous joint/secondary cartilaginous joint/amphiarthrosis. bones united by fibro-cartilage. type of cartilaginous joint |
| synovial joints | most numerous, most important. presence of joint cavity, a synovial membrane encapsulating the joint, & great degree of movement |
| articular cartilage | thin layer of hyaline cartilage coating bony surfaces in contact with each other in synovial joints. |
| marginal cartilages | labra articulara. usually fibrocartilaginous and form congruent articular surfaces that are stable. absorb concussion. |
| articular capsule | a synovial membrane that surrounds synovial joint. made of inner synovial membrane and outer fibrous layer. |
| diarthroses | joints with free movement |
| amphiarthroses | slightly moveable joints |
| synarthroses | joints with no or very little movement |
| abduction | movement of body structure away from median plane |
| adduction | movement of body structure towards median plane |
| supination | rotation of limbs so that the palmar/plantar surface of the limb faces medially |
| pronation | limb is rotated so the palmar/plantar surface of the limb faces laterally |
| intertubercular groove | contains tendon of Biceps brachii |
| tricipital line | site of attachment for triceps muscles |
| middle carpal joint | formed between the radial and ulnar carpal bones and carpal bones 1, 11, 111, and IV |
| carpometacarpal joint | formed between carpal bones 1, 11, 111, and IV and the base of metacarpal bones 1, II, III, IV, and V |
| extrinsic muscles | attach the limb to the trunk/body |
| intrinsic musles | on/within the limb itself |
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