Muscles

Question 1

Shoulder girdle muscles

Question 2

Pectoralis minor

Answer 2

Organ - anterior surface of the 3rd to 5th rib
Insertion -coronoid process of the scapula
Action -down rotation depression
Innervation- C8-T1 medial pectoral nerve

Question 3

Serratus anterior

Answer 3

Origin - deso-lateral surface of the upper 9 ribs
Insetion - anterior aspect of the medial border of the scapula
Action - protraction rotation a Board
Innervation C5 to C7 (long thoracic nerve)

Question 4

Subclavius

Answer 4

Origin- superior aspect of the first rib
Insertion- inferior groove, mid portion of the clavicle
Function- stabilizes and protects sternoclavicular joint, clavicular depression

Innovation - C5 to 6

Question 5

Spinal vertebrae landmarks

Question 6

Trapezius

Answer 6

Origin- 3 segments: from occiput to spinous process C1-T2
Insertion- 3 segments : clavicle, omicron, scapular spine
Action- elevation, upper rotation, depression, abduction

Question 7

Rhomboids: Major and minor

Answer 7

Origin- minor: spinous processes C6,7 Major: spinous processes T1-4
Insertion- medial border of the scapula above and below spine scapula
Action- adduction, down rotation , elevation

Question 8

Legator Scapula

Answer 8

Origin- transverse process C1-C4
Insertion- medial border of the scapula above spinal scapula
Action- elevates the medial border of the scapula

Question 9

Glenohumeral joint muscles

Question 10

Pectoralis major

Answer 10

Origin - medial half anterior surface clavicle anterior surface, coastal Cartlidge six ribs plus sternum
Insertion - intertubercular groove of the humerus
Faction - internal rotation , horizontal adduction, abduction of the glenohumeral joint, flexion (upper) extension (lower)

Question 11

Caracobrachialis

Answer 11

Origin - coracoid process
Insertion- middle medial border of humerus
Action - flextion, abduction, horizontal adduction

Question 12

Subscapularis

Answer 12

Origin - anterior surface of the scapular fossa
Insertion- raps around front of humourous to the lesser tubercle
Action - internal rotation, adduction, flexion/extension
Function - stabilization (RC)

Question 13

Deltoid

Answer 13

Origin- 3 branches: anterior clavicle , Acromion, inferior edge of spine of scapula
Insertion - deltoid tuberosity
Action abduction, either flexion or extension, either horizontal adduction or abduction, either internal or External rotation

Question 14

Superaspinatus

Answer 14

Origin- supraaspinatus fossa ( between college bone)
Insertion -greater tubercle
Action - initates abduction
Function - stabilization (RC)

Question 15

Latissimus dorsi

Answer 15

Origin-
Insertion- medial side/ floor intertubercal
Action- adduction, extension, internal rotation, horazontial abdcution

Question 16

Teres major

Answer 16

Origin- inferior 3rd lateral border scapula, superior inferior angle( under shoulder blads)
Insertion- medial lip/floor interatubercal groove
Action- extension, internal rotation, adduction

Question 17

Infraspinatus

Answer 17

Origin - infaspinatus fossa
Insertion- posterior greater tuberical
Action- external rotation, horizontal abduction, extension
Function- stabilization(RC)

Question 18

Teres Major

Answer 18

Origin - posterior upper and middle aspect of butter a border scapula
Insertion- posteriorly greater tubercla humourous
Action- external rotation, horizontal abduction , and extension
function- stabilization

Question 19

Glenohomeral flextion

Answer 19

Anterior deltoid
Upper pactorails major

Question 20

Shoulder joint stabilization

Answer 20

STIS

Question 21

Calenohumeral extension