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Osteology > 3. Pectoral Girdle > Flashcards

3. Pectoral Girdle Flashcards

1
Q

Function of pectoral girdle

A

Increase mobility of upper arm in all range of movements

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2
Q

Function of clavicle

A

Stabilise shoulder
Acts as a strut, holding glenohumeral joint in parasagittal plane
Increases range of movement in shoulder joint
Transmit supportive stress of upper limb to axial skeleton
Protect subclavian vessels and auxillary neurovascular bundle

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3
Q

What attaches to the costal tuberosity of the clavicle?

A

Costoclavicular ligament

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4
Q

What attaches to the anterior, inferior and middle aspect of the clavicle?

A

Pectoralis major

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5
Q

What attaches to the inferior, posterior and medial aspect of the clavicle?

A

Sternohyoid

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6
Q

Action of Pectoralis major

A

Adduction, medial rotation and flexion of arm

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7
Q

Action of sternohyoid

A

Depresses hyoid

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8
Q

What attaches to the conoid tubercle of clavicle?

A

Conoid ligament

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9
Q

What attaches to the subclavian groove of the clavicle?

A

Subclavius

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10
Q

Action of subclavius

A

Depression of clavicle

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11
Q

What attaches to the superior, lateral and posterior aspect of clavicle?

A

Trapezius

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12
Q

Action of trapezius

A

Elevation, adduction, depression and rotation of scapula

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13
Q

Action of SCM

A

Head rotation and flexion

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14
Q

What attaches to the superior, lateral and anterior aspect of the clavicle?

A

Deltoid

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15
Q

Action of deltoid

A

Flexion, extension, rotation, abduction of arm

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16
Q

Properties of hyoid bone

A

Only bone not directly articulating with any other
Sits roughly anterior to C4-5 junction
Attachment for tongue musculature
Can be fractured during strangulation
2 pairs of horns - lesser and greater hornu

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17
Q

What attaches to the anterior inferior body of the hyoid?

A

Digastricus
Stylohyoid
Mylohyoid

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18
Q

Action of stylohyoid

A

Elevate tongue

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19
Q

Action of mylohyoid

A

Raises floor of mouth and tongue

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20
Q

What attaches to the lateral acromion and lower border of spine of scapula?

A

Deltoid

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21
Q

What attaches to the acromion of the scapula?

A

Trapezius

22
Q

What attaches to the supraglenoid tubercle and coracoid process of the scapula?

A

Biceps brachii

23
Q

Action of biceps brachii

A

Supination and flexion of forearm

24
Q

What attaches to the infraglenoid tubercle?

A

Long head of triceps brachii

25
Q

Action of triceps brachii

A

Extension of forearm

26
Q

What attaches to the coracoid process of scapula?

A

Pectoralis minor

27
Q

Action of pec major on scapula

A

Draws scapula forward and down

28
Q

What attaches to the subscapular fossa of the scapula?

A

Subscapularis

29
Q

Action of subscapularis

A

Medial rotation of arm

Shoulder stabilisation

30
Q

What attaches to the supraspinous fossa of the scapula?

A

Supraspinatus

31
Q

Action of supraspinatus

A

Adduction of arm

32
Q

What attaches to the infraspinous fossa of the scapula?

A

Infraspinatus

33
Q

Action of infraspinatus

A

lateral rotation and abduction of arm

34
Q

What attaches to the lateral border of the scapula on the dorsal surface?

A

Teres minor

Teres major

35
Q

Action of teres minor

A

Lateral rotation, adduction of arm

Stabilisation

36
Q

Action of teres major

A

Medial rotation, adduction and extension of arm

37
Q

What attaches to the anterior medial border of the scapula?

A

Serratus anterior

38
Q

Action of serratus anterior?

A

Rotates/protracts scapula for arm flexion and abduction

39
Q

What attaches to the posterior medial border of the scapula?

A

Levator scapulae
Rhomboid minor
Rhomboid major

40
Q

Action of levator scapulae

A

Elevation and rotation of scapula

41
Q

Action of rhomboid minor

A

Retraction, elevation and stabilisation of scapula

42
Q

Action of rhomboid major

A

Retraction, elevation and stabilisation of scapula

43
Q

What attaches to the superior, medial and posterior aspect of clavicle?

A

Sternocleidomastoid

44
Q

What are the non-metric traits of the clavicle?

A

Costal tuberosity
Position of nutrient foramen
Shape of Acromion

45
Q

What are the non-metric traits of the scapula?

A

Ossification of the supra-scapular ligament forming the supra-scapular foramen/notch
Groove on postero-lateral border = circumflex sulcus
Unfused acromial epiphysis

46
Q

What age would they be if there was a shaft but no epiphyses of the clavicle?

A

7 weeks prenatal - 20 years

47
Q

What age would they be if the shaft and medial epiphysis was not fused?

A

13 years - 30 years

48
Q

What age would they be if the lateral end was fused?

A

18 years - 30 years

49
Q

Where does short head of Biceps brachii attach?

A

Coracoid process of scapula

50
Q

Where does long head of biceps brachii attach?

A

Supraglenoid tubercle

51
Q

Where does long head of tricpes brachii attach?

A

Infraglenoid tubercle

52
Q

Where does latissimus dorsi attach?

A

Medial border, inferior angle

Osteology (11 decks)

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