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28 Cards in this Set
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- Back
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Synarthroses
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immovable joints, example suture joints
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Amphiarthroses
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slightly moveable joint
example symphysis, between vertebrae |
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Diarthroses
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most moveable joints, example synovial joint
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Name three types of joints
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fibrous, cartilaginous, synovial
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Fibrous joint definition
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joint connected by fibrous ligaments only
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What is the difference between ligament and tendon
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Ligament connects two bones, tendon connects bone and muscle
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Name 3 types of fibrous joint
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suture joint, gomphoses, syndesmoses
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Describe suture joint
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type of fibrous joint that connects flat bones of the skull in a tooth like manner
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what kind of joint in terms of mobility is suture joint
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synarthroses
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Describe gomphoses
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type of fibrous joint that anchors teeth in sockets
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Syndesmoses
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apposed bones connected by fibrous membrane, amphiarthroses, radia/ulna, tibia/fibula
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2 types of cartilaginous joint
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synchondroses and symphyses
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synchondroses
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temporary type of cartilaginous joint seen at growth plate, made of hyaline cartilage, replaced by bone
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symphyses
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covered by hyaline cartilage, slightly moveable, ex - pubic symphysis, intervertebral
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Characteristics of synovial joint
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diarthroses, hyaline cartilage, joint capsule, synovial lining, capsular ligament, may have disk, fatpad in many, intra articular ligaments in some, freely moveable
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Name types of articular ligaments
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capsular, extracapsular, intra articular
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Capsular ligament
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thickening of articular capsule, inside joint
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extracapsular ligament
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outside and distinct from capsule
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Intra articular ligament
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appear to be within synovial membrane but actually outside joint cavity
example - acl/pcl |
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Name 6 types of synovial joints
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pivot, ball and socket, condyloid, hinge, plain, saddle
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Plane syn joint
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allows gliding and sliding, uniaxial, between fingers
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Hinge syn joint
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allows flexion and extension, uniaxial
ex - elbow, knee |
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Pivot joint
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allows rotation. like shaking head
example atlantoaxial joint |
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Condyloid joint
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allows flexion, extension, abduction, adduction and circumduction, no rotation, biaxial, example wrist, finger movement
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Saddle joint
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saddle like heads allows rotation in two planes, biaxial example carpometacarpal joint of the thumb
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Ball and socket
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allows most movement in many axes, hip
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Joints blood supply
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Joints are relatively poorly supplied with blood vessels. In general, the blood supply comes from collateral branches of larger vessels. Many joints are surrounded by systems of anastomoses that allow blood flow around the joint regardless of the position of the limb
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Joints nerve supply
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highly innervated, capsule especially, nerves supplying joint also supply muscle moving that joint and skin covering joint
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