Upper limb muscle revision: Shoulder Flashcards
1
Q
Trapezius
A
O= External occipital protuberence and C7 - T12 I= lateral clavicle, acromion, spine of scapula N= Accessory nerve, C3 and C4 spinal nerves A= U: elevation of scapula; M: retraction of scapula; L: depression and retraction; U and L: upwards rotation of scapula; neck extension, side flexion, contralateral rotation
2
Q
Deltoid
A
O= lateral clavicle, acromion, spine of scapula I= deltoid tuberosity N= axillary A= Ant.: shoulder flex; Middle: shoulder ab; Post.: shoulder ex, hor. ab and ER
3
Q
Pectoralis major
A
O= Clav head: medial clavicle; ster head: sternum and T1-T6 costal cartlidge I= Lateral lip of bicipital groove N= lat. and med. pectoral nerve A= CH: flex humerus; SH: add humerus; Both: hor. add and IR of humerus, protraction of scapula
4
Q
Pectoralis minor
A
O= 3rd to 5th ribs I= medial coracoid process N= medial pectoral nerve A= elevate ribs, protraction/depression of scapula
5
Q
Latissimus dorsi
A
O= thoracolumbar facia, iliac crest, T7-L5 spinous process, inferior angle of scapula I= floor of bicipital groove N= Thoracodorsal A= ex, add, hor. ab, IR of humerus
6
Q
Serratus anterior
A
O= ant. first 8-9 ribs I= costal surface of medial border of scapula N= long thoracic A= protraction and upwards rotation of scapula
7
Q
Teres major
A
O= post. surface of inferior angle I= Medial lip of bicipital groove N= Lower subscapular A= add and IR humerus
8
Q
Rhomboid major
A
O= T2-T5 spinous process I= medial border of scap N= dorsal scapular A= retract and elevate scapula
9
Q
Rhomboid minor
A
O= C7-T1 spinous process I= medial border of scap (superior to rhom maj) N= Dorsal scapula A= retract and elevate scap
10
Q
Levator scapulae
A
O= C1-C4 transverse process I= superior part of medial border N= dorsal scapular A= elevation and downward rotation of scap; neck side flexion
11
Q
Supraspinatus
A
O= supraspinatus fossa I= superior facet of greater tubercle N= suprascapular A= humeral ab
12
Q
Infraspinatus
A
O= infraspinous fossa I= middle facet of greater tubercle N= suprascapular A= humeral ER
13
Q
Teres minor
A
O= lateral border I= inferior facet of greater tubercle N= axillary A= humeral ER
14
Q
Subscapularis
A
O= subscapular fossa I= lesser tubercle N= Upper and lower subscapularis A= IR and add of humerus
15
Q
Biceps brachii
A
O= SH: coracoid process, LH: supraglenoid tubercle I= radial tuberosity and medial forearm via biceps aponeurosis N= musculocutaneous A= flex and ab humerus, flex elbow, supinate forearm
