Ch.10 Joints Flashcards

1
Q

List and descirbe the functional classification of joints Provide examples.

A
  • Synarthrosis
    • immoveable joint
  • Amphiarthrosis
    • sighly moveable joint
    • ex: pubic symphysis
  • Diarthrosis
    • freely moveable joint
    • eg: knee, arm
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2
Q

List the structural classificaions of joints

A
  • Fibrous Joint
    • held together by Collagen CT
    • Ex: sutures of skull bones
  • Cartilaginous Joint
    • held together by cartilage
    • ex: pubic symphysis
  • Synovial Joint
    • contains synovial cavity
      • found btwn 2 bones of a forming joint
    • synovial fluid
      • located in synovial cavity
      • supplies nutrients to articular cartilage and lubes to decrease friction
    • Articular capsule
      • joins bones together
      • encolses synovial cavity
    • Ligament
      • dense irregular CT
      • Stabilizes joint with muscle of region
    • Diarthrosis joints
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3
Q

Describe cartilaginous joints and provide an example

A
  • held together by cartilage
  • pubis symphysis
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4
Q

Describe Fibrous Joints and provide an example

A

held together by Collagen CT

Ex: sutures of skull bones

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5
Q

Describe a synovial joint.

A
  • contains synovial cavity
    • found btwn 2 bones of a forming joint
  • synovial fluid
    • located in synovial cavity
    • supplies nutrients to articular cartilage and lubes to decrease friction
  • Articular capsule
    • joins bones together
    • encolses synovial cavity
  • Ligament
    • dense irregular CT
    • Stabilizes joint with muscle of region
  • Diarthrosis joints
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6
Q

What are the angular movements at joints

A
  • gliding
  • flexion
  • extension
  • hyperextension
  • abduction
  • adduction
  • circumduction
  • rotation
  • elevation
  • depression
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7
Q

Describe the angular joint movement gliding

A
  • movement of flat bone surfaces
  • side to side and back and forth
  • little change in angle btwn the bones
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8
Q

Describe the angular joint movement Flexion

A
  • decrease in angle
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9
Q

Describe the angular joint movement extension

A
  • increase in angle
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10
Q

Describe the angular joint movement hyperextension

A

increase in angle beyond anatomical position

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11
Q

Describe the angular joint movement abduction

A

away from the midline

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12
Q

Describe the angular joint movement adduction

A

towards the midline

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13
Q

Describe the angular joint movement circumduction

A

flexion, abduction, extension, adduction in succession. The distal end of the body part moves in a circle

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14
Q

Describe the angular joint movement rotation

A

movement of a bone around its longitudinal axis. In the limb it can be medial or lateral

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15
Q

Describe the angular joint movement elevation

A

upward movement of body part

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16
Q

Describe the angular joint movement depression

A

downward movement of a body part

17
Q

Describe synovial fluid

A
  • located in synovial cavity
  • supplies nutrients to articular cartilage and lubes to decrease friction
18
Q

What is the role of the articular capsule

A
  • unites articulating bones
  • encolses synovial cavity
  • surrounds a synovial joint
  • made up of 2 layers
    • outer fibrous membrane
    • inner synovial membrane
19
Q

Describe a ligament

A
  • dense irregular CT
  • Stabilizes joint with muscle of region
20
Q

What is a synovial cavity

A

found btwn 2 bones of a forming joint