Scapular and Pectoral Regions (gross) 11-28-16

Question 1

The action of the deltoid

Answer 1

1. abduct humerus

2. flexes, extends and rotates humerus

Question 2

Innervation of deltoid

Answer 2

axillary n. and posterior circumflex humeral vessels

Question 3

Action of Teres major

Answer 3

medially rotate and extend humerus

Question 4

Innervation of Teres major

Answer 4

lower sub scapular n. and sub scapular vessels

Question 5

Action of supraspinatus

Answer 5

Abduct humerus (1st 15degrees)

Question 6

Innervation of supraspinatus

Answer 6

Suprascapular n. and vessels and dorsal scapular vessels

Question 7

Action of infraspinatus

Answer 7

laterally rotates humerus

Question 8

Innervation of infraspinatus

Answer 8

suprascapular n. and vessels and subscapular vessels

Question 9

Action of Teres minor

Answer 9

lateral rotation of humerus

Question 10

Innervation of Teres minor

Answer 10

axillary n. and suprascapular and subscapular vessels

Question 11

Action of Subscapularis

Answer 11

medial rotation of humerus

Question 12

Innervation of Subscapularis

Answer 12

upper and lower subscapular nn. and subscapular vessels

Question 13

The 4 muscles that make up the rotator cuff are…. and the …. muscle provides outer muscular support

Answer 13

1. Supraspinatus
2. Infraspinatus
3. Teres minor
4. Subscapularis
   - –Deltoid

Question 14

The Quadrangular space’s superior, inferior, medial and lateral borders

Answer 14

Superior: Teres minor
Inferior: Teres major
Medial: Long head of triceps
Lateral: Surgical neck of humerus

Question 15

What nerve and vessels go through the quadrangular space?

Answer 15

• Axillary n.

- Posterior circumflex humeral vessels

Question 16

Superior, inferior and lateral borders of the triangular space?

Answer 16

Superior: Teres Minor
Inferior: Teres Major
Lateral: Long head of triceps brachii

Question 17

The triangular space contains what artery?

Answer 17

Circumflex scapular artery

Question 18

The superior, medial and lateral

Answer 18

Superior: Teres major
Medial: Long head of triceps brachial
Lateral: Lateral head of the triceps brachii

Question 19

The triangular interval contains what nerve and artery

Answer 19

Radial nerve

Deep/profunda brachial artery

Question 20

The…. Bursa is a membranous sac containing synovial fluid and is inferior to acromion and deltoid but superior to supraspinatus

Answer 20

Subacromial (subdeltoid)

Question 21

T/F: the subacromial (subdeltoid) bursa communicates with the joint capsule

Answer 21

False, does not

Question 22

Supra scapular nerve is from ventral rami…. and runs…. the supra scapular transverse ligament

Answer 22

• C5,6

- under

Question 23

Supra scapular artery runs… supra scapular transverse scapular ligament

Answer 23

over

Question 24

Supra scapular a. and n. supply

Answer 24

infra and supraspinatus

Question 25

Dorsal scapular n. is from ventral rami…

Answer 25

-C5

Question 26

Dorsal scapular n. and deep transverse cervical a. both run parallel to the vertebral border of scapular and supply…

Answer 26

• levator scapulae

- rhomboid mm.