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MBChB221 Musculoskeletal > Pectoral Girdle > Flashcards

Pectoral Girdle Flashcards

1
Q

Pec Major Nerve

A

Lateral Pectoral & Medial Pectoral

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2
Q

Pec Major Origin

A

Head 1 - Clavicle
Head 2 - Sternum

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3
Q

Pec Major Insertion

A

Intertubercular Groove

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4
Q

Pec Major Movements

A

Adducts Humerus
Internal Rotates Humerus
Protracts Scapula (by pulling on Humerus)

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5
Q

Pec Minor Nerve

A

Medial Pectoral

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6
Q

Pec Minor Origin

A

Ribs

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7
Q

Pec Minor Insertion

A

Coracoid (of scapula)

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8
Q

Pec Minor Movements

A

Depression Scapula
Protraction Scapula
(But mostly just stabilises pec girdle)

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9
Q

Subclavius Nerve

A

C5

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10
Q

Subclavius Origin

A

Costal cartilage of 1st rib

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11
Q

Subclavius Insertion

A

Clavicle

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12
Q

Subclavius Movements

A

Braces Clavicle
Weak depressor Scapula

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13
Q

Serratus Anterior Nerve

A

Long Thoracic

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14
Q

Serratus Anterior Origin

A

Ribs

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15
Q

Serratus Anterior Insertion

A

Scapula (Medial border)

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16
Q

Serratus Anterior Movements

A

Protracts Scapula (“Boxer’s muscle)
Superiorly Rotates Scapula (LOWER FIBRES ONLY)

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17
Q

Trapezius Nerve

A

C11

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18
Q

Trapezius Origin

A

Superior Nuchal Line

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19
Q

Superior Trapezius Insertion

A

Clavicle

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20
Q

Middle Trapezius Insertion

A

Acromion

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21
Q

Inferior Trapezius Insertion

A

Spine of Scapula

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22
Q

Trapezius Movement (All fibres)

A

Retracts Scapula

23
Q

Trapezius Movement (Superior)

A

Elevates scapula

24
Q

Trapezius Movement (Inferior)

A

Scapula Depression

25
Q

Trapezius Movement (Sup Inf)

A

Superior Rotation Scapula

26
Q

Trapezius Movement (Mid)

A

Retracts Scapula

27
Q

Levator Scapulae Origin

A

Upper Cerviucal Vertebrae

28
Q

Levator Scapulae Insertion

A

Scapula

29
Q

Levator Scapulae Nerve

A

Dorsal Scapular Nerve

30
Q

Levator Scapulae Movement

A

Elevates and inferiorly rotates scapula

31
Q

Rhomboid Major Origin

A

Upper Thoracic Vert

32
Q

Rhomboid Minor Origin

A

Lower Cervical Vertebrae

33
Q

Rhomboids Insertion

A

Scapula

34
Q

Rhomboids Nerve

A

Dorsal Scapular

35
Q

Rhomboids Movement

A

Retracts Scapula, Inferiorly Rotates

36
Q

How to Lock Conceptual Joint

A

Contract Serratus anterior and rhomboids at same time, as pull in opposite directions

37
Q

Lat Dorsi Origin

A

Iliac Crest and Lower Spinal Cord

38
Q

Lat Dorsi Insertion

A

Humerus Intertubercular Groove

39
Q

Lat Dorsi Nerve

A

Thoracodorsal

40
Q

Lat Dorsi Movements

A

Adducts humerus, internally rotates humerus, inferiorly rotates scapula, depresses scapula

41
Q

Scapula Angles

A

Glenoid Fossa (sup lat), Superior (sup med), Inferior

42
Q

Scapula Surfaces

A

Subscapula fossa, supraspinous fossa, Infraspinous fossa

43
Q

Scapula Protuberances

A

Acromion, Spine (continuous with acromion), Coracoid

44
Q

Coracoid Ant or Post

A

Ant

45
Q

Spine + Acromion Ant or Post

A

Post

46
Q

Scapula Protuberances Med or Lat

A

Lat

47
Q

Winged Scapula Cause

A

Serratus Anterior problem (innervation)

48
Q

SC Joint Type

A

Synovial Saddle

49
Q

SC Joint Ligaments

A

Ant/Post Sternoclavicular, Interclavicular, Costoclavicular

50
Q

Strongest SC Ligament

A

Costoclavicular

51
Q

SC Ligament Across Jugular Notch

A

Interclavicular

52
Q

AC Joint Role

A

Allows independent movement of scapula, distinct from clavicle

53
Q

AC Joint Ligaments

A

Acromioclavicular (weak, proper), Coracoclavicular (strong, not technically part of AC joint)

54
Q

AC Joint Tear Result

A

Humerus Drops

MBChB221 Musculoskeletal (26 decks)

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