Part 1: Pectoral Girdle

Question 1

Bones of the pectoral girdle are

Answer 1

Scapula and clavicle

Question 2

Joints of the pectoral girdle are

Answer 2

Sternoclavicular and acromioclavicular

Question 3

Origin of pectoralis major

Answer 3

Clavicular head: medial 1/2 of clavicle

Sternocostal head: lateral manubrium and sternum, six upper costal cartilages and external oblique aponeurosis

Question 4

Insertion of pectoralis major

Answer 4

lateral lip of bicipital groove of humerus and anterior lip of deltoid tuberosity

Question 5

Action of pec major

Answer 5

Clavicular head: flexion

Sternal head: adducts and medially rotates arm

Question 6

Nerve supply of pec major

Answer 6

Medial pectoral nerve (medial cord) and lateral pectoral nerve (lateral cord)

Question 7

Pect Minor origin

Answer 7

Anterior aspect of ribs 3,4,5

Question 8

Pect Minor insertion

Answer 8

Medial and upper surface of coracoid process of scapula

Question 9

Pect Minor Action

Answer 9

Elevates ribs when scapular fixed or depresses point of shoulder

Question 10

Pect Minor nerve supply

Answer 10

Medial pectoral nerve (medial cord) and lateral pectoral nerve (lateral cord)

Question 11

Subclavius origin

Answer 11

Costochondral junction of 1st rib

Question 12

Subclavius insertion

Answer 12

Subclavian groove on inferior surface of middle 1/3 of clavicle

Question 13

Subclavius action

Answer 13

Depresses and steadies clavicle

Question 14

Subclavius nerve supply

Answer 14

Nerve to subclavius ( C5,^ upper trunk)

Question 15

Trapezius origin

Answer 15

Medial 1/3 of the superior nuchal line, ligamentum nuchae, spinous process and supraspinous ligaments to T12

Question 16

Trapezius insertion

Answer 16

Upper fibres: lateral 1/3 of posterior border of clavicle, medial acromion and lateral spine of scapula
Lower fibres: medial end of scapula spine as far as deltoid tuberosity of spine of scapular

Question 17

Trapezius action

Answer 17

Elevates and retracts scapula. Rotates scapula during abduction of arm. If scapula fixed - extends and laterally flexes neck

Question 18

Trapezius nerve supply

Answer 18

Spinal root of accessory nerve (XI). Spinal nerve (C3,C4) for proprioception.

Question 19

Latissimus Dorsi Origin

Answer 19

All thoracic spines and supraspinous ligaments from T7 down and L/S spines via lumbar fascia.
Posterior 1/3 of iliac crest and lower 4 ribs

Question 20

Latissimus Dorsi insertion

Answer 20

Floor of bicipital groove of humerus after spiralling around teres major

Question 21

Latissimus Dorsi action

Answer 21

Extends, adducts and medially rotates arm. Costal attachments help with deep inspiration/exp.

Question 22

Latissimus Dorsi nerve supply

Answer 22

Thoracodorsal nerve from posterior cord

Question 23

Rhomboid major origin

Answer 23

Spines of T2-T5 an supraspinous ligaments

Question 24

Rhomboid major insertion

Answer 24

Lower 1/2 of posterior medial border of scapula at level of the spine

Question 25

Rhomboid major action

Answer 25

Retracts scapula and rotates to rest position

Question 26

Rhomboid major nerve supply

Answer 26

Dorsal scapula nerve (C5) from root

Question 27

Rhomboid minor origin

Answer 27

Lower ligamentum nchae, spines of C7/T1

Question 28

Rhomboid minor insertion

Answer 28

Small area of posteromedial border of scapula at level of spine

Question 29

Rhomboid minor action

Answer 29

Retracts scapula and rotates to rest position

Question 30

Rhomboid minor nerve supply

Answer 30

Dorsal scapula nerve (C5) from root

Question 31

Levator scapulae origin

Answer 31

Posterior tubercle of transverse process of C1-C4

Question 32

Levator scapulae insertion

Answer 32

upper part of medial border of scapula

Question 33

Levator scapulae action

Answer 33

Raises medial border of scapula

Question 34

Levator scapulae nerve supply

Answer 34

dorsal scapula nerve and anterior 1’ rami of C3/C$

Question 35

Serratus anterior origin

Answer 35

Upper 8 ribs and anterior intercostal membranes from midclavicular line

Question 36

Serratus anterior insertion

Answer 36

Inner medial border of scapula
1&2 - upper angle
3&4 - costal margin
5-8 - inferior angle

Question 37

Serratus anterior action

Answer 37

laterally rotates and protracts scapula

Question 38

Serratus anterior nerve supply

Answer 38

Long thoracic nerve with:
1-2: C5
3-4: C6
5-8: C7