Lecture 3: Shoulder & Scapular Region

Question 1

What is the pectoral girdle?

Answer 1

Scapula + Clavicle
-Holds upper limb into place

Question 2

“arm bone” in brachial region

Answer 2

Humerus

Question 3

List the three joints of the shoulder

Answer 3

1. Sternoclavicular
2. Acromioclavicular
3. Glenohumeral

Question 4

T/F: The shoulder joint is both stable and very mobile

Answer 4

F: Very mobile, however it is not very stabile. (it is a trade off)

Question 5

The sternoclavicular (SC) joint is a _____________ joint.

Answer 5

Synovial joint

Question 6

The sternoclavicular (SC) joint is between what 2 structures?

Answer 6

Clavicle and Manubrium of sternum

Question 7

Is the sternoclavicular (SC) joint a stable joint?

Answer 7

Yes - it rarely dislocates

Question 8

T/F: The sternoclavicular (SC) joint is not reinforced by many ligaments

Answer 8

False; it is reinforced by many ligaments

Question 9

What is the synovial joint between the acromion and lateral end of clavicle?

Answer 9

Acromioclavicular joint

Question 10

The Acromioclavicular joint is a synovial joint. It is strengthened superiorly by the __________

Answer 10

Acromioclavicular ligament

Question 11

Acromioclavicular joint - The lateral part of the clavicle attached to the coracoid process by the

Answer 11

coracoclavicular ligament

Question 12

What is shoulder seperation?

Answer 12

Dislocation of the Acromioclavicular joint

Question 13

What is the most mobile (and injured) joint in the body?

Answer 13

Glenohumeral Joint

Question 14

The glenohumeral joint is a ___________________ synovial joint.

Answer 14

Ball-in-socket

Question 15

The stability of the glenohumeral joint mainly comes from?

Answer 15

The rotator cuff muscles (as opposed to bones and ligaments)

Question 16

Skin of the POSTERIOR shoulder is innervated by…

Answer 16

Posterior Rami

Question 17

Skin of the LATERAL and ANTERIOR shoulder is innervated by…

Answer 17

Anterior rami

Question 18

Shoulder muscles are innervated by…

Answer 18

Anterior Rami

Question 19

What is the innervation of the trapezius?

Answer 19

CN XI - Accessory

Question 20

What is the action of the trapezius?

Answer 20

Elevate, retract, & depress scapula

Question 21

What is the innervation of the Latissimus Dorsi?

Answer 21

Thoracodorsal N

Question 22

What is the action of the Latissimus Dorsi?

Answer 22

Extends and ADducts humerus

Question 23

What is the innervation of the levator scapulae?

Answer 23

Dorsal scapular N

Question 24

What is the function of the levator scapulae?

Answer 24

Elevate scapula

Question 25

What is the innervation of rhomboid mjr and minor?

Answer 25

Dorsal scapular N

Question 26

What is the function of rhomboid mjr and minor?

Answer 26

Elevate, retract, and inferiorly rotate scapula

Question 27

Muscles that originate and insert on the upper limb are ________ muscles of the shoulder.

Answer 27

Intrinsic

Question 28

The ______________ is the primary ABductor of the upper limb

Answer 28

Deltoid

Question 29

What is the innervation of the deltoid?

Answer 29

Axillary N

Question 30

The __________________ extends, ADducts, & medially rotates the arm.

Answer 30

Teres Major

Question 31

What is the innervation of the Teres major?

Answer 31

Lower Subscapular N.

Question 32

What are the rotator cuff muscles [4]?

Answer 32

1.) Subscapularis 2.) Supraspinatus 3.) Infraspinatus 4.) Teres Minor

Question 33

What is the action of the subscapularis?

Answer 33

Medially rotate arm

Question 34

What is the innervation of the subscapularis?

Answer 34

Subscapular nn.

Question 35

What is the action of the supraspinatus?

Answer 35

ABducts arm

Question 36

What is the innervation of the supraspinatus?

Answer 36

Suprascapular n.

Question 37

What is the action of the infraspinatus?

Answer 37

ADducts & laterally rotates arm

Question 38

What is the innervation of the infraspinatus?

Answer 38

Suprascapular n.

Question 39

What is the action of the Teres Minor?

Answer 39

Adduct & Laterally rotates arm

Question 40

What is the innervation of Teres Minor?

Answer 40

Axillary n.

Question 41

What structures travels through the triangular space?

Answer 41

Circumflex scapular A.

Question 42

What structures travel through the triceps hiatus?

Answer 42

Profunda brachii a. & Radial N.

Question 43

What structures travel through the quadrangular space?

Answer 43

Posterior circumflex humeral a. & axillary n.

Question 44

What are the boundaries of the triangular space?

Answer 44

Teres major & minor

Question 45

What are the boundaries of the triceps hiatus?

Answer 45

Triceps brachii, humerus, & teres major

Question 46

What are the boundaries of the quadrangular space?

Answer 46

Teres major & minor, triceps brachii, & humerus

Question 47

What is the main blood supply to the upper limb?

Answer 47

Subclavian artery

Question 48

The subclavian changes its name to ________ at the lateral boarder of the 1st rib

Answer 48

Axillary artery

Question 49

The axillary artery changes its name to __________ at the inferior border of teres major

Answer 49

Brachial Artery

Question 50

T/F: Deep veins have the same names as arteries in the upper limb.

Answer 50

True

Question 51

Which superficial vein is on the thumb side?

Answer 51

Cephalic

Question 52

What superficial vein is on the pinky side?

Answer 52

Basilic

Question 53

Where is venipuncture done?

Answer 53

Median cubital vein