Mod 4: Shoulder Muscle Chart

Question 1

Proximal attachments for the deltoid?

Answer 1

anterior is clavicle
middle is acromion
posterior is spine of scapula

Question 2

Distal attachment for deltoid m?

Answer 2

deltoid tuberosity

Question 3

Proximal attachment for teres major?

Answer 3

inferior angle of scapula

Question 4

distal attachment for teres major m?

Answer 4

intertubercle groove

Question 5

proximal attachment for supraspinatus m?

Answer 5

supraspinous fossa

Question 6

Distal attachment for supraspinatus, infraspinatus, and teres minor?

Answer 6

greater tubercle

Question 7

Proximal attachment for subscapularis?

Answer 7

subscapular fossa

Question 8

Proximal attachment for infraspinatus?

Answer 8

infraspinous fossa

Question 9

Proximal attachment for teres minor?

Answer 9

lateral border of scapula

Question 10

Action of deltoid?

Answer 10

All are done across the humerus (arm) and glenohumoral (shoulder):

anterior is flexion, IR

middle is abduction

posterior is extension, ER, horizontal ABD

Question 11

Action of teres major?

Answer 11

adduction, IR, extension of the humerus/glenohumeral

Question 12

Action of supraspinatus m?

Answer 12

first 15 degrees of abduction of the humerus/glenohumeral

Question 13

Action of infraspinatus?

Answer 13

ER of the humerus and glenohumeral

Question 14

Action of teres minor?

Answer 14

ER of humerus and glenohumeral

Question 15

Action of subscapularis?

Answer 15

IR of the humerus and glenohumeral

Question 16

Innervation of deltoid?

Answer 16

axillary n
C5-C6

Question 17

Innervation of teres major m?

Answer 17

lower subscapular n
C5-C6

Question 18

Innervation of supraspinatus m?

Answer 18

suprascapular n
C5-C6

Question 19

Innervation of infraspinatus m?

Answer 19

suprascapular n
C5-C6

Question 20

Innervation of teres minor m?

Answer 20

axillary n
C5-C6

Question 21

Innervation of subscapularis m?

Answer 21

upper and lower subscapular nn
C5-C6

Question 22

Paralleling artery of the deltoid?

Answer 22

posterior humeral circumflex a

Question 23

Paralleling artery of teres major?

Answer 23

scapular circumflex artery

Question 24

Paralleling artery of supraspinatus m?

Answer 24

suprascapular a

Question 25

Paralleling artery of infraspinatus m?

Answer 25

suprascapualar a

Question 26

Paralleling artery of teres minor m?

Answer 26

posterior humeral circumflex a