Upper Extremities

Question 1

What stabilizes the sterno-clavicular joint?

Answer 1

> articular disc
anterior sternoclavicular ligament
interclavicular ligament

Dislocations are rare

Question 2

What type of joint is the sterno-clavicular joint?

Answer 2

Synovial saddle type

Question 3

Where does clavicular fractures happen?

Answer 3

Junction bet middle and lateral thirds of the clavicle

Question 4

What type of joint is the gleno-humeral joint?

Answer 4

Synovial ball and socket joint

Question 5

What ligaments strengthen the synovial plane acromio-clavicular joint?

Answer 5

Extrinsic ligaments

Question 6

What deformity happens when the coraco-clavicular ligaments rupture?

Answer 6

Shoulder separation

Question 7

Which of the ff is not a part of thoraco-appendicular muscles?
a. Pectoralis minor
B. Trapezius
C. Serratus anterior
D. Subclavius

Answer 7

B.

Question 8

Anterior thoracic muscle that adducts and medially rotates the humerus

Answer 8

Pectoralis major

Question 9

Anterior thoracic muscle that stabilizes the SCAPULA.

Answer 9

Pectoralis minor

Question 10

Allows lateral rotation of scapula allowing shoulder abduction past 90 degrees

Answer 10

Serratus anterior

Question 11

Muscle that stabilizes the clavicle and SC joint

Answer 11

Subclavius

Question 12

The posterior thoraco-appendicular muscles are also called

Answer 12

Extrinsic shoulder muscles

Question 13

Muscle that attaches the shoulder girdle to the skull and vertebral column

Answer 13

Trapezius
Fxn: rotates glenoid outward- raise arm
Innervation: CN XI, cvn 3&4

Question 14

The latissimus dorsi attaches the humerus to the vertebral column and inserts the

Answer 14

Intertubercular groove

Upper border: T7

Question 15

Posterior muscle that attaches to the supero-medial border of the scapula and aids in lowering the arm

Answer 15

Levator scapulae

Innervation: CvN 3,4,5

Question 16

The rhomboid minor is found \_\_\_\_\_\_\_\_\_ to rhomboid major.
A. Anterior
B. Superficial
C. Superior
D. Inferior

Answer 16

C

Innervation: CvN 4,5

Question 17

Which of the ff is NOT a rotator cuff muscle?
A. Teres major
B. Supraspinatus
C. Subscapularis
D. Infraspinatus

Answer 17

A. Teres minor

Question 18

The deltoid muscle mainly functions in \_\_\_\_\_\_\_\_\_\_\_\_ of the arm.
A. Flexion
B. Extension
C. Abduction
D. Adduction

Answer 18

C.

Innervation: axillary nerve (C5,6)

Question 19

A strong adductor and medial rotator of the shoulder forming the posterior axillary fold.

Answer 19

Teres major

Question 20

What muscle initiates arm abduction?

Answer 20

Supraspinatus

Above the spine of scapula

Question 21

What rotator cuff muscles Are external rotators of the shoulder?

Answer 21

Infraspinatus and teres MINOR

Question 22

What muscle is the landmark of the division of the axillary artery?

Answer 22

Pectoralis minor

Question 23

What are the 3 parts of the axillary artery?

Answer 23

1. Superior thoracic
2. Thoraco-acromial artery- lateral thoracic
3. Subscapular artery- anterior and posterior circumflex

Question 24

The anterior arm muscles are innervated by

Answer 24

Musculocuteneous nerve

Question 25

What is the function of the anconeus muscle?

Answer 25

Elbow extension

Question 26

What artery passes around the spiral groove of the humerus togehter with the radial nerve?

Answer 26

Deep branch of the brachial artery

Question 27

What are the 3 synovial joints of the elbow?

Answer 27

Humero-ulnar Humero-radial Proximal radio-ulnar

Question 28

What joint is the only articulation between the upper limb and the axial skeleton?

Answer 28

Sterno-clavicular joint

Question 29

What are the structures enclosed in the axillary sheath?

Answer 29

``` Axillary vessels (artery and vein) 3cords of the brachial plexus ```

Question 30

What nerve arrises from the C5 root?

Answer 30

Dorsal scapular nerve

Question 31

What nerve arises from C5,C6,C7 roots?

Answer 31

Long thoracic nerve

Question 32

The long thoracic nerve innervates what muscle?

Answer 32

Serratus anterior muscle

Question 33

What are the 2 nerves that arises from the superior trunk?

Answer 33

Subclavius and suprascapular nerve

Question 34

The dorsal scapular nerve innervates what muscle of the back?

Answer 34

Rhomboid muscle

Question 35

What are the 3 branches of the lateral CORD?

Answer 35

Lateral pectoral nerve Musculocutaneous nerve Lateral root of median nerve

Question 36

If a patient cannot move the muscles of his posterior arm, what cord in the brachial plexus is possibly affected?

Answer 36

Posterior cord

Question 37

Which of the following is not a branch of the medial cord? A. Medial root of median nerve B. Ulnar nerve C. Medial cutaneous nerve of the arm and forearm D. Thoracodorsal nerve

Answer 37

D. Thoracodorsal is branch of posterior chord

Question 38

The axillary artery is the continuation of _________ after the lateral border of the 1st rib.

Answer 38

Subclavian artery

Question 39

What divides the axillary artery into 3 parts?

Answer 39

Pectoralis minor muscle

Question 40

What artery is found in the 1st part of the axillary artery? A. Superior thoracic artery B. Subscapular artery C. Anterior circumflex a

Answer 40

A. Only branch of the 1st part

Question 41

What are the two branch of the 2nd part of axillary artery?

Answer 41

``` Thoracoacromial artery (medial to pm) Lateral thoracic artery (lateral to pm) ```

Question 42

``` What Artery is NOT found on the 3rd part of the axillary artery? A. Subscapular a B. Anterior circumflex humeral C. Posterior circumflex humeral D. Superior thoracic ```

Answer 42

D

Question 43

What is the largest branch of the axillary artery?

Answer 43

Subscapular artery

Question 44

3 branches of the axillary artery in the arm?

Answer 44

Deep a of the arm Superior collateral a Inferior collateral a

Question 45

What is the alternate supply of blood when the brachial artery is blocked?

Answer 45

Profunda brachii artery

Question 46

During inferior vena cava blockage, what is the possible alternate route back to the heart?

Answer 46

Axillary vein

Question 47

What is the vein used when doing blood extractions?

Answer 47

Median cubital vein

Question 48

Where will you auscultate for the brachial pulse when taking blood pressures?

Answer 48

Cubital fossa

Question 49

dislocation of radial head or tearing of the annular ligament caused by a strong sudden pulling force on a protonated forearm.

Answer 49

Nursemaid's elbow

Question 50

What nerve is most commonly injured during a supracondylar fracture of the humerus?

Answer 50

Radial nerve

Question 51

Scapular winging is a manifestation of an injury to the ____________ nerve as it courses superficially along the serratus anterior muscle.

Answer 51

Long thoracic nerve

Question 52

In humeral shaft injury where the radial nerve is injured, what most likely will manifest? A. Scapular winging B. Wrist drop C. Waiter'stip

Answer 52

B

Question 53

Injury of the C5 and C6 roots, where limb limp side, internally rotated shoulder and pronated forearm are observed.

Answer 53

Erb-duchenne's palsy or waiter's tip

Question 54

Injury of the lower roots C8-T1 of the cervical plexus with clawhand appearance, unopposed mcp extensors, and anesthetic medial side observed.

Answer 54

Klumpke's palsy or clawhand

Question 55

The proximal radio-ulnar joint that allows pronation and supination of the forearm is what type of joint?

Answer 55

Synovial pivot joint

Question 56

What stabilizes the distal radio-ulnar joint?

Answer 56

Triangular fibrocartilage complex (TFCC)

Question 57

A common injury of the distal radius often seen with a dinner fork deformity.

Answer 57

Colle's fracture

Question 58

The superficial group of anterior forearm are attached proximally at the ______________.

Answer 58

Medial epicondyle

Question 59

What innervates the muscles of the anterior forearm?

Answer 59

Median and ulnar nerves

Question 60

What carpals are involved in the rigid central strut of the wrist?

Answer 60

Trapezoid and capitate

Question 61

What type of joint is the CMCJ of the thumb?

Answer 61

Saddle

Question 62

The boxer's fracture happens on the ______ metacarpal neck.

Answer 62

5th

Question 63

This happens when part of the volar plate or collateral ligaments may get torn and interpose in bet bone ends.

Answer 63

Jammed fingers or PIPJ dislocation

Question 64

A hyperabduction injury of thumb MCPJ usually a fall by a skier landing on his thumb while holding a pole causing a tear of the ulnar collateral ligament.

Answer 64

Gamekeeper's thumb or skier's thumb

Question 65

The synovial tendon sheath that envelops the extensor tendons over the wrist

Answer 65

Extensor retinaculum

Question 66

Inflammation of synovium and tendon sheath of 1st extensor compartment from constant friction

Answer 66

De quervain's tenosynovitis

Question 67

The floor of the anatomic snuffbox constitutes what carpal bones?

Answer 67

Scaphoid and trapezium

Question 68

If there is a fracture in the anatomical snuffbox what content most likely will be damaged or injured?

Answer 68

Radial artery

Question 69

With osseo-fibrous tunnel bet pisiform and hamate where ulanar nerve may be compressed

Answer 69

Guyon's canal or cyclist's palsy