2 - Subscapular & Pectoral Regions

Question 1

What are the muscles of the pectoral girdle aka Rotator cuff muscles?

Answer 1

Deltoid m. "shoulder pads"
Teres Major m. " lats' little helper"
SITS
   Supraspinatus m.
   Infraspinatus m. 
   Teres Minor m.
   Subscapularis m.

Question 2

Deltoid Orgin

Answer 2

Lateral clavicle
Acromion
Spine of Scapula
(same as trapezius insertion???)

Question 3

Deltoid Insertion

Answer 3

Deltoid tuberosity of humerus

Question 4

Deltoid Action

Answer 4

primarily ABducts humerus
secondarily
flexes, extends, & rotates humerus

Question 5

Deltoid Supply

Answer 5

axillary nerve

posterior circumflex humeral vessels

Question 6

Teres Major Origin

Answer 6

Inferior angle of scapula

Question 7

Teres Major Insertion

Answer 7

crest of lesser tubercle of humerus

Question 8

Teres Major Action

Answer 8

ABducts, extends, & medially rotates humerus

Question 9

Teres Major supply

Answer 9

lower subscapular nerve

subscapular vessels

Question 10

Supraspinatus Origin

Answer 10

supraspinous fossa

Question 11

Supraspinatus Insertion

Answer 11

greater tubercle of humerus

same as infraspinatus m.

Question 12

Supraspinatus Action

Answer 12

ABducts humerus (first 15 degrees)

Question 13

Supraspinatus Supply

Answer 13

suprascapular nerve
suprascapular vessels
dorsal scapular vessels

Question 14

Infraspinatus Origin

Answer 14

infraspinous fossa

Question 15

Infraspinatus Insertion

Answer 15

greater tubercle of humerus

same as supraspinatus m.

Question 16

Infraspinatus Action

Answer 16

lateral rotation of humerus

Question 17

Infraspinatus Supply

Answer 17

suprascapular nerve
suprascapular vessels
subscapular vessels

Question 18

Teres Minor Origin

Answer 18

lateral border of scapula

Question 19

Teres Minor Insertion

Answer 19

greater tubercle of humerus

same as supraspinatus m. & infraspinatus m.

Question 20

Teres Minor Action

Answer 20

lateral rotation of humerus

same as infraspinatus m.

Question 21

Teres Minor Supply

Answer 21

axillary nerve
suprascapular vessels
subscapular vessels

Question 22

Subscapularis Origin

Answer 22

subscapular fossa

Question 23

Subscapularis Insertion

Answer 23

lesser tubercle of humerus

Question 24

Subscapularis Action

Answer 24

medial rotation of humerus

Question 25

Subscapularis Supply

Answer 25

upper & lower subscapular nerves | subscapular vessels

Question 26

What goes through the QUADRANGULAR SPACE?

Answer 26

Axillary nerve | posterior circumflex humeral artery

Question 27

What is deep to the TRIANGULAR SPACE?

Answer 27

Circumflex scapular vessels

Question 28

What is in the TRIANGULAR INTERVAL?

Answer 28

deep brachial artery | radial nerve

Question 29

What are the borders of the Quadrangular space? | SIML

Answer 29

``` Superior = teres minor m. Inferior = teres major m. Medial = long head of triceps brachii m. Lateral = surgical neck of humerus ```

Question 30

What are the borders of the Triangular Space? | SIL

Answer 30

``` Superior = teres minor Inferior = teres major Lateral = long head of triceps brachii m. ```

Question 31

What are the borders of the Triangular Interval? | SML

Answer 31

``` Superior = teres major m. Medial = long head of triceps brachii m. Lateral = lateral head of triceps brachii m. ```