S2_L2: Pectoral and Shoulder Region

Question 1

What is the most common shoulder dislocation?

Answer 1

Anterior

Question 2

This is also known as “frozen shoulder”

Answer 2

Adhesive capsulitis

Question 3

Determine which nerve is being described by the following:

1. No supply in the upper arm but will supply the forearm muscles
2. Pierces the coracobrachialis then passes between the biceps and brachialis muscles
3. Longest and largest brachial nerve of the brachial
   plexus

A. Musculocutaneous nerve
B. Median nerve
C. Ulnar nerve
D. Radial Nerve
E. None

Answer 3

1. B
2. A
3. D

Question 4

Determine which nerve is being described by the following:

1. at the insertion of coracobrachialis, it pierces medial
   fascial septum and enters posterior compartment of the arm at the medial epicondyle
2. enters anterior compartment just above the
   lateral epicondyle
3. can be pinched in weightlifters

A. Musculocutaneous nerve
B. Median nerve
C. Ulnar nerve
D. Radial Nerve
E. None

Answer 4

1. C
2. D
3. A

Question 5

For every (1)_____ ° of abduction of the arm, 2° of abduction occurs in the (2)____ and 1° of abduction occurs by (3)_____ of the (4)_____.

Answer 5

1. 3
2. glenohumeral joint
3. rotation
4. scapula

Question 6

This is also known as the saw muscle

Answer 6

Serratus Anterior

Question 7

What muscle makes up the lateral border of the triangular space?

Answer 7

long head of triceps

Question 8

Determine if the following joints in the shoulder complex is a synovial joint or not.

1. Scapulothoracic
2. Costoclavicular
3. Suprahumeral
4. Sternoclavicular
5. Acromioclavicular

A. TRUE JOINT
B. FALSE/FUNCTIONAL JOINT

Answer 8

1. B
2. A
3. B
4. A
5. A

Question 9

This is known as the intermuscular space below the glenohumeral joint

Answer 9

QUADRANGULAR SPACE

Question 10

TRUE OR FALSE: Sternoclavicular joint is a synovial double plane joint.

Answer 10

True

Question 11

What nerves supply the GH joint?

Answer 11

axillary & suprascapular nerve

Question 12

This is a space found between the superior and middle
glenohumeral ligaments

Answer 12

Foramen of Weitbrecht

Question 13

TRUE OR FALSE: Without suprahumeral space, the shoulder cannot move

Answer 13

True

Question 14

Match the following movements in the shoulder girdle.

1. arms up
2. Movement of scapula in which the glenoid fossa
   faces superiorly
3. movement of glenoid fossa to face inferiorly
4. distal end of clavicle and acromion process of
   scapula move superiorly
5. distal end of clavicle and scapula move anteriorly

A. ELEVATION
B. DEPRESSION
C. PROTRACTION
D. RETRACTION
E. UPWARD ROTATION OF SCAPULA
F. DOWNWARD ROTATION OF SCAPULA

Answer 14

1. A
2. E
3. F
4. A
5. C

Question 15

When the GH joint performs a specific movement, the shoulder girdle (scapula and clavicle) performs an accessory movement. The following are paired correctly, EXCEPT:

A. horizontal abduction - adduction & protraction
B. IR - abduction & protraction
C. Flexion - elevation & upward rotation
D. Abduction - upward rotation
E. None

Answer 15

A. horizontal abduction - adduction & protraction

NOTE: It is paired with adduction & retraction

Question 16

What postural deviation may be seen when the long thoracic nerve is injured?

Answer 16

Winging of the Scapula

Question 17

The (1)_____ muscle initiates abduction, but the (2)____ muscle continues the movement

Answer 17

1. Supraspinatus
2. Deltoid

Question 18

Enumerate the Rotator cuff muscles.

Answer 18

1. Supraspinatus
2. Infraspinatus
3. Teres minor
4. Subscapularis

Question 19

TRUE OR FALSE: Abduction of the arm involves rotation of scapula as well as movement at the shoulder joint

Answer 19

True

Question 20

This ligament is important in blocking the head of the
humerus from dislocating it superiorly.

A. costoclavicular ligament
B. sternoclavicular ligament
C. accessory ligament (trapezoid and conoid ligament)
D. acromioclavicular ligament
E. coracoacromial ligament
F. glenohumeral ligament

Answer 20

E. coracoacromial ligament

Question 21

After a fall during a football game on an extended arm,
player noted the lateral end of the clavicle protrude
prominently. Scapula also droops down. Which ligament is affected?

A. costoclavicular ligament
B. sternoclavicular ligament
C. accessory ligament (trapezoid and conoid ligament)
D. acromioclavicular ligament
E. coracoacromial ligament
F. glenohumeral ligament

Answer 21

D. acromioclavicular ligament

Question 22

The fibrous capsule of the shoulder joint (glenohumeral) is weakest where?

Answer 22

Foramen of Weitbrecht

NOTE: This is where dislocation of the head of humerus is most likely to occur.

Question 23

The following are branches of the brachial artery, EXCEPT:

A. Nutrient artery
B. Profunda artery
C. Superior ulnar collateral artery
D. Inferior ulnar collateral artery
E. None

Answer 23

E. None

Question 24

What cord/s make up the Median nerve?

Answer 24

medial and lateral cords

Question 25

What cord/s make up the Ulnar nerve?

Answer 25

medial cord

Question 26

Which arteries supplies the posterior compartment of the upper arm? Name the 2 arteries

Answer 26

1. Profunda brachii 2. Ulnar Collateral arteries

Question 27

The following structures pass through the anterior compartment of the upper arm, EXCEPT: A. Brachial artery B. Basilic artery C. Basilic vein D. Median nerve E. Musculocutaneous nerves

Answer 27

B. Basilic artery

Question 28

The following is true about Erb Duchenne palsy, EXCEPT: A. Traction or tearing of C7 and C8 roots B. Upper lesion of the brachial plexus C. Also known as “Waiter’s tip deformity” D. Affects suprascapular nerve, nerve to subclavius nerve, musculocutaneous nerve, and axillary nerve) E. Results from excessive displacement of the humeral head to the opposite side and depression of the shoulder on same side

Answer 28

A. Traction or tearing of C7 and C8 roots NOTE: It is the traction or tearing of C5 and C6 roots

Question 29

The following is true about Rotator Cuff Injuries, EXCEPT: A. commonly injured during repetitive use of upper limb B. possible MOI is during swimming C. most commonly affected tendon is the infraspinatus tendon D. (+) drop arm test E. NONE

Answer 29

C. most commonly affected tendon is the infraspinatus tendon NOTE: most commonly affected - supraspinatus

Question 30

The following is true about Adhesive capsulitis, EXCEPT: A. fibrosis and scarring between the inflamed articular capsule, rotator cuff and subacromial bursa B. characterized by the development of dense adhesions, capsular thickening and capsular restrictions C. occurs between the age of 50-65 D. also known as “Periarthritis” E. NONE

Answer 30

C. occurs between the age of 50-65 NOTE: most commonly occurs between the age of 40-65

Question 31

What nerve innervates the Biceps?

Answer 31

musculocutaneous nerve

Question 32

What nerve innervates the Triceps?

Answer 32

radial nerve

Question 33

TRUE OR FALSE: The triceps helps in extending the shoulder

Answer 33

True

Question 34

What are the 3 actions of the biceps brachii?

Answer 34

1. supinator 2. elbow flexor 3. weak shoulder flexor

Question 35

What nerve innervates the Trapezius?

Answer 35

Spinal accessory nerve and C3-C4

Question 36

What nerve innervates the Deltoid?

Answer 36

Axillary nerve

Question 37

The Supraspinatus muscle is a/an ______. A. Abductor B. Adductor C. Internal Rotator D. External Rotator E. None of the above

Answer 37

A. Abductor

Question 38

The Teres Minors muscle is a/an ______. A. Abductor B. Adductor C. Internal Rotator D. External Rotator E. None of the above

Answer 38

D. External Rotator

Question 39

The Infraspinatus muscle is a/an ______. A. Abductor B. Adductor C. Internal Rotator D. External Rotator E. None of the above

Answer 39

D. External Rotator

Question 40

The Subscapularis is a/an ______. A. Abductor B. Adductor C. Internal Rotator D. External Rotator E. None of the above

Answer 40

C. Internal Rotator

Question 41

TURE OR FALSE: Breast are mammary glands

Answer 41

True

Question 42

If there is a tumor or infection in the medial quadrant of the breasts, where will it spread?

Answer 42

internal thoracic group of nodes NOTE: if lateral quadrant, it will spread to anterior axillary or pectoral group of nodes

Question 43

In late pregnancy, what do you call the first milk that a mother produces with its breast?

Answer 43

colostrum

Question 44

TRUE OR FALSE: The “stimulus” of the mother’s milk production is the baby

Answer 44

True Additional Information: When a baby isn’t able to suck all of the mother’s produced milk in the breast, the mother will naturally produce less milk. This is because the mother and the baby have a “reflex” relationship

Question 45

First site of metastasis in the breast is at the _____.

Answer 45

nodes

Question 46

This space is between middle and inferior glenohumeral ligaments

Answer 46

Foramen of Rouviere

Question 47

When a patient is diagnosed with Klumpke's Palsy, the affected nerve roots are?

Answer 47

C8, T1

Question 48

SCENARIO: Upon PE, a pt presents with Lateral Winging of Scapula. As a knowledgeable pt, what muscle deficit is present and which nerve innervates this?

Answer 48

trapezius ; spinal accessory nerve

Question 49

Which nerve is said to be affected in a crutch palsy?

Answer 49

Axillary Nerve or Radial Nerve