Upper Extremity Muscles

Question 1

Subclavius muscle origin

Answer 1

First rib

Question 2

Subclavius muscle insertion

Answer 2

Clavicle

Question 3

Subclavius Nerve

Answer 3

Nerve to the subclavius muscle

Question 4

Subclavius action

Answer 4

Pulls down clavicle and pulls up 1st rib

Question 5

Teres Major origin

Answer 5

Posterior inferior angle of scapula

Question 6

Teres Major insertion

Answer 6

Crest of lesser tubercle of humerus

Question 7

Teres Major nerve

Answer 7

Lower subscapular Nerve

Question 8

Teres Major Blood

Answer 8

subscapular artery

Question 9

Teres Major action

Answer 9

addiction, extension, and internal rotation of humerus

Question 10

Deltoid origin

Answer 10

Anterior-lateral 1/3rd of clavicle
Middle-acromion process
Posterior- spine of scapula

Question 11

Deltoid insertion

Answer 11

deltoid tuberosity of humerus

Question 12

Deltoid nerve

Answer 12

axillary Nerve

Question 13

Deltoid blood supply

Answer 13

Posterior humeral circumflex artery

Question 14

Deltoid action

Answer 14

Anterior- flexion, internal rotation, horizontal adduction
Middle- shoulder abduction
Posterior- extension, external rotation, horizontal abduction

Question 15

Pectoralis Major Origin

Answer 15

Anterior sternum, upper 6 costal cartilages, medial 1/3rd of clavicle

Question 16

Pectoralis major insertion

Answer 16

Crest of greater tubercle

Question 17

Pectoralis Major nerve

Answer 17

Lateral and medial pectoral nerves

Question 18

Pectoralis major Blood

Answer 18

Lateral thoracic artery

Question 19

Pectoralis major Action

Answer 19

flexion, internal rotation, horizontal adduction

Question 20

Pectoralis Minor origin

Answer 20

Anterior surface of ribs 2-5

Question 21

Pectoralis Minor insertion

Answer 21

coracoid process

Question 22

Pectoralis Minor nerve

Answer 22

medial pectoral nerve

Question 23

Pectoralis Minor action

Answer 23

Depresses or tilts scapula downward. expands ribcage.