Axio-Appendicular (Week 5)

Question 1

Bones of the Shoulder Girdle

Answer 1

Clavicle, Scapula, Manubrium, Sternum, Humerus

Question 2

Joints of Shoulder Girdle

Answer 2

1. Sternoclavicular (SC) joint: synovial
2. Acromioclavicular (AC) joint: synovial
3. Glenohumeral (GH) joint: synovial

Question 3

Function of AC joint

Answer 3

prevent superior displacement of the humerus in the glenoid fossa (CA)
maintain relationship of clavicle to scapula in elevation of upper limb (AC & CC)

Question 4

Ligaments of SC Joint

Answer 4

Sternoclavicular
Costoclavicular

Question 5

Ligaments of AC Joint

Answer 5

Acromioclavicular
Coraco-acromial
Coracoclavicular
Trapezoid
Conoid

Question 6

Trapezius Att.

Answer 6

P: superior nuchal line, occipital protuberance, nuchal
ligament, spinous process C7 – T12
D: spine of scapula, lateral 1/3 clavicle

Question 7

Trapezius A/NS

Answer 7

Action: moves scapula
* Descending (Superior, Upper): elevation & upward
rotation
* Middle: retraction
* Ascending (Inferior, Lower): depression & upward
rotation
NS: Accessory nerve

Question 8

Latissimus Dorsi Att.

Answer 8

P: spinous processes T6-12, thoracolumbar
fascia (TLF), inferior ribs, iliac crest
D: floor of intertubercular sulcus of humerus

Question 9

Latissimus Dorsi A/NS

Answer 9

Action: ADD, EXT, IR of GHJ
* Directly moves arm on GHJ
* Indirectly moves scapula on STJ (Scapulothoracic)
NS: Thoracodorsal nerve

Question 10

Levator Scapulae Att

Answer 10

P: transverse processes C1-4
D: superior angle, medial border, base
(root) of spine of scapula

Question 11

Levator Scapulae A/NS

Answer 11

Action: elevate scapula, side flexion
of neck, control scapula in UL movements
NS: dorsal scapular nerve

Question 12

Rhomboid Minor Att.

Answer 12

P: spinous processes C7-T1, nuchal ligament
D: medial border on the base of the spine of
scapula

Question 13

Rhomboid Minor A/NS

Answer 13

Action: retract & rotate scapula; fix scapula
to thoracic wall
NS: Dorsal scapular nerve

Question 14

Rhomboid Major Att.

Answer 14

P: spinous processes T2-5
D: medial border of scapula from spine of
scapula to inferior angle

Question 15

Rhomboid Major A/NS

Answer 15

Action: retract & rotate scapula; fix scapula to
thoracic wall
NS: Dorsal scapular nerve

Question 16

Pectoralis Major Att.

Answer 16

Proximal:
Clavicular head: medial clavicle
Sternal head: sternum and superior 6
costal cartilages

Distal: lateral lip intertubercular sulcus
humerus

Question 17

Pectoralis Major A/NS

Answer 17

Action: Adduction & IR humerus
Clavicular: flexes humerus
Sternal: extends humerus from flexed
position
NS: lateral & medial pectoral nerve

Question 18

Pectoralis Minor Att.

Answer 18

P: anterior surface of 3rd-5th ribs nearcostal cartilages
D: coracoid process

Question 19

Pectoralis Minor A/NS

Answer 19

Action: draws scapula anteriorly and
inferiorly against thorax (scapula IR);
scapula anterior tilt, stabilise scapula
NS: medial pectoral nerve

Question 20

Subclavius Att.

Answer 20

P: costal cartilaginous joint 1st rib
D: clavicle

Question 21

Subclavius A/NS

Answer 21

Function: pulls clavicle into SCJ
NS: nerve to subclavius

Question 22

Serratus Anterior Att.

Answer 22

P: ribs 1-8 (Ser8us)
D: medial border of scapula

Question 23

Serratus Anterior A/NS

Answer 23

Action: protract and upwardly rotate
scapula; stabilise scapula against
thoracic wall
NS: Long thoracic nerve