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16 Cards in this Set
- Front
- Back
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Joints
3 STRUCTURAL CATEGORIES |
Fibrous (synarthrodial)
Cartilaginous (amphiarthrodial) Synovial (diarthrosis) |
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Fibrous Joints
CHARACTERISTICS |
Articulating bones are joined by dense collagen fibers; little elasticity; no space between surfaces (a.k.a. synarthodial joint), no motion, provide shape and strength, synarthrodial
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3 types of fibrous joints...
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Suture
Syndesmosis Gomphosis |
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Fibrous Joints
Sutures characteristics and example |
2 flat bones meet side-to-side
Immovable, movement is not intended in the adult Ex. Cranial sutures |
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Fibrous Joints
SYDESMOSES characteristics and example |
Bones are joined by a long fibrous connective tissue
Slightly moveable Ex. Tibia/fibula, radius/ulna |
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Fibrous Joints
Gomphoses characteristics and example |
Where the root of a tooth attaches into either the maxilla or mandible
Tight union must be able to resist the intense pressures created with biting/chewing Immovable Ex. teeth |
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Cartilaginous Joints
how comprised and what are the 2 types? |
Comprised of cartilage (gel-like tissue that lacks calcium)
Synchondrosis Symphysis |
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Cartilaginous joints
Synchondrosis characteristics and example? |
Lose flexibility in adulthood because calcium is deposited into the joint
Slightly moveable in youth, immovable as adult Ex. 1st rib and the sternum |
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Cartilaginous joints
Symphysis characteristics and example? |
Primarily comprised of cartilage but is more flexible than a synchondrosis
Slightly moveable Aka amphiathrosis Ex. Pubic symphysis, intervertebral joints |
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Synovial joints
how common and how movable? |
Most common joint-type in body
Freely moveable |
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Synovial Joints
Hinge |
flexion and extension in one plane only
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Synovial Joints
Pivot |
rotate around long axis only
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Synovial Joints
Gliding |
surfaces flat allowing sliding and gliding but no other movement
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Synovial Joints
Saddle |
one bone shaped like a saddle and the other bone like the rider
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Synovial Joints
Ball and socket- |
ball head bone rotates in cuplike socket of the other
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Synovial Joints
Condyloid |
like an egg in a cup allowing angular movement in all directions
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