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Anatomy & P > Articulations > Flashcards

Articulations Flashcards

1
Q

Articulations

A

Body movements that occur at joints where two bones meet

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2
Q

Two methods of classification of joints

A

Functional classification

Structural classification

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3
Q

Functional classifications

A

Based on range of motion f the joint

  • synarthrosis
  • amphiarthrosis
  • diarthrosis
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4
Q

Structural classifications

A

Relies on the anatomical organization of the joint

  • bony
  • fibrous
  • cartilaginous
  • synovial
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5
Q

Synarthroses joints

A 
Immovable 
Very strong
Edges of bones touch or interlock 
Are 4 types 
-suture
-gomphosis
-synchondrosis
-synostosis
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6
Q

Amphiarthrosis

A 
More movable 
Stronger then freely movable 
Two types 
-syndrsmosis
-symphysis
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7
Q

Diarthrosis

A

Movable
At the ends of long bones
Lined with synovial membrane
Within articular capsules

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8
Q

Functional classification of synovial joints

A 
Gliding
Hinge
Pivot
Condylar
Saddle 
Ball and socket
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9
Q

Gliding joints

A 
Flattened or slightly curved faces 
Limited motion ( nonaxial )
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10
Q

Hinge joints

A

Angular motion in a single plane ( monaxial )

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11
Q

Condylar joints

A

Oval articular face within a depression

Motion in two planes ( biaxial )

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12
Q

Saddle joints

A

Two concave, and straddled

Biaxial

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13
Q

Pivot joints

A

Rotation only ( monaxial )

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14
Q

Ball and socket joints

A

Round articular face in a depression ( triaxial )

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15
Q

Suture

A

Bones interlocked
Are bound by dense fibrous connective tissue
Are found only in the skull

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16
Q

Gomphosis

A

Fibrous connection

Bunds teeth to sockets

17
Q

Synostosis

A

Fused bones , immovable
Metopic suture of skull
Epiphyseal lines of long bones

18
Q

Articular cartilages

A

Smooth surface is lubricated by synovial fluid to reduce friction
Pad articulating surface are in articular capsules which prevents bones from touching

19
Q

Synovial fluid

A

Obtains slippery proteoglycans secreted by fibroblasts

  • lubrication
  • nutrient distribution
  • shock absorption
20
Q

Accessory stuructures

A 
Cartilages
Fat pads 
Ligaments
Tendons
Bursae
21
Q

Cartilages

A

Cushion the joins

22
Q

Fat pads

A

Superficial to the joint capsule

Protects articular cartilages

23
Q

Ligaments

A

Support and strengthen joints

24
Q

Tendons

A

Attach to muscle around joint

Help support the joint

25
Q

Bursae

A

Singular, bursa, a pouch
Pockets of synovial fluid
Cushion areas where tendons or ligaments rub

26
Q

Injuries

A

Dislocation: articulating surfaces are forced out of position
Dances to articular cartilage, ligaments and joint capsule
Subluxation: a partial dislocation

27
Q

Three types of dynamic motion

A

Linear movement ( gliding )
Angular movement
Rotation

28
Q

Planes of dynamic motion

A

Monaxial ( 1 axis )
Biaxial ( 2 axes )
Triaxial ( 3 axes )

Anatomy & P (9 decks)

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