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Anatomy: first med > Articulations of pectoral girdle > Flashcards

Articulations of pectoral girdle Flashcards

1
Q

Joints

A

site of articulations between bones

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2
Q

3 functional joint types

A
  1. synovial = diarthrosis/freely moveable
  2. cartilaginous = amphiarthroses/slightly moveable
  3. fibrous = synarthrosis/immovable
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3
Q

Synovial joints

A
  • motion & flexibility
  • contains synovial fluid
  • articular hyaline cartilage covering articulating surfaces
  • joint capsule
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4
Q

Joint capsule parts

A
  • outer fibrous membrane
  • inner synovial membrane
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5
Q

synovial membrane of joint capsule

A
  • attaches at margin of joint surfaces between cartilage and bone
  • produces synovial fluid
  • lines synovial bursae also
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6
Q

Synovial bursae

A
  • contain synovial fluid
  • acts as a cushion to reduce friction
  • located between tissues (tendon/muscle/bone)
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7
Q

Fibrous membrane

A

surrounds and stabilises joint parts thicken to form ligaments

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8
Q

ligaments

A

bone to bone

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9
Q

tendons

A

muscle to bone

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10
Q

uniaxial movement

A

movement in a single plane

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11
Q

biaxial

A

movement in 2 planes

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12
Q

multiaxial

A

movement in 3 planes

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13
Q

Types of synovial joints

A
  • plane/flat
  • hinge
  • ball-and-socket
  • saddle
  • pivot
  • ellipsoid/condyloid
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14
Q

plane joint

A
  • flat articular surfaces
  • bones slide
  • Acromioclavicular joint
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15
Q

Hinge joint

A
  • resembles door hinge
  • flexion and extension
  • elbow, interphalangeal joints
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16
Q

ball and socket

A
  • rounded head into cavity
  • multiaxial
  • shoulder/glenohumeral joint
17
Q

saddle joint

A
  • reciprocally concave/convex articular surfaces
  • flexion/extension and ab/adduction
  • between metacarpal 1 and trapezium
18
Q

pivot joint

A
  • rounded process of bone rotates around central axis within ligamentous ring/sleeve
  • rotation
  • radius rotate on ulna at proximal/distal radioulnar joints
19
Q

ellipsoid/condyloid joint

A
  • 2 curved bones together. convex surface to concave surface
  • flexion/extension
  • ab/adduction
  • circumduction
  • wrist/radiocarpal joint
  • metacarpophalangeal joints of fingers
20
Q

articulation of clavicle with axial skeleton

A

sternoclavicular joint

21
Q

articulation of clavicle and scapula with each other

A

acromioclavicular joint

22
Q

articulating surfaces of the sternoclavicular joint

A
  • clavicle
  • manubrium of sternum
  • cartilage of 1st rib
23
Q

what type of joint is the sternoclavicular joint?

A

saddle joint

24
Q

ligaments in the sternoclavicular joint

A
  • anterior sternoclavicular ligament
  • posterior sternoclavicular ligament
25
Q

interclavicular ligament

A
  • joins superior surface of 2 clavicles across sternal notch
  • limits depression of shoulder
26
Q

costoclavicular ligament

A
  • from 1st costal cartilage to inferior surface clavicle
  • limits elevation of shoulder
27
Q

articular disk of SC joint

A
  • between sternum and clavicle
  • allows clavicle and manubrium to slide over each other
28
Q

blood supply to the sternoclavicular joint

A

internal thoracic & suprascapular arteries

29
Q

innervation to SC joint

A

branches from nerve to subclavius

30
Q

Acromioclavicular joint location

A

between clavicle and shoulder

31
Q

articulating surfaces of acromioclavicular joint

A
  • clavicle
  • acromion of scapula
32
Q

What type of synovial joint is the acromioclavicular joint?

A

plane

33
Q

movements of acromioclavicular joint

A

gliding, rotation of the scapula on clavicle

34
Q

ligaments that strengthen and stabilise the AC joint

A
  • superior acromioclavicular ligament
  • inferior acromioclavicular ligament
  • conoid ligament
  • trapezoid ligament
35
Q

coracoclavicular ligament

A
  • attaches coracoid process to clavicle
  • supports lateral end of clavicle
  • comprised of trapezoid and conoid ligaments
36
Q

Blood supply to AC joint

A

supraclavicular and thoracoacromial arteries

37
Q

innervation of AC joint

A

branches from lateral pectoral and suprascapular nerves

Anatomy: first med (17 decks)

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