Exam 3: Wrist, Hands, and Elbow

Question 1

Joint formed by radius and capitulum

Answer 1

Radiocapitellar

Question 2

Bending the elbow decreases its angle

Answer 2

Flexion

Question 3

Much larger at the distal end

Answer 3

Radius

Question 4

Hand moving from palm up to palm down

Answer 4

Pronation

Question 5

Straightening the elbow to increase angle

Answer 5

Extension

Question 6

Much larger at the proximal end

Answer 6

Ulna

Question 7

1 of 2 bones that are the proximal attachments for muscles that flex and extend the elbow

Answer 7

scapula

Question 8

Classification of radioulnar joint [Pivot joint]

Answer 8

Trochoid

Question 9

Joint formed by the radius and ulna

Answer 9

Radioulnar

Question 10

hand moving from palm down to palm up

Answer 10

supination

Question 11

Other proximal attachment for muscles that flex and extend the elbow

Answer 11

Humerus

Question 12

Elbow joint is hinge joint or

Answer 12

ginglymus

Question 13

Upper half of the posterior surface of the humerus

Answer 13

Triceps Brachii Lateral head

Question 14

Lateral surface of the distal end of the radius at the styloid process

Answer 14

Brachioradialis

Question 15

Middle 1/3 of the lateral surface of the radius

Answer 15

Pronator Teres

Question 16

Distal 1/4 of the anterior side of the ulna

Answer 16

Pronator quadratus

Question 17

Supraglenoid tubercle above the superior lip of the glenoid fossa

Answer 17

Biceps brachii long head

Question 18

Lateral epicondyle of the humerus and the neighboring posterior part of the ulna

Answer 18

Supinator

Question 19

Coronoid process of the ulna

Answer 19

Brachialis

Question 20

Posterior surface of the lateral condyle of the humerus

Answer 20

Aconeus

Question 21

As the elbow reaches full extension the olecranon process does what?

Answer 21

Fits into a depression on the humerus called the “olecranon fossa, effectively locking the elbow joint into place by providing stability at full extension, preventing hyperextension

Question 22

Lateral supracondylar ridge is in an anatomical position located where?

Answer 22

Lateral border of the Humerus

Question 23

Distal attachment of the radioulnar joint is located where?

Answer 23

Styloid process of the Ulna

Question 24

Ulna is much larger proximally than the radius True or False

Answer 24

True

Question 25

Where is the olecranon process located?

Answer 25

The proximal end of the Ulna bone, forming the bony tip of the elbow

Question 26

Flexion of the elbow occurs in what plane of motion?

Answer 26

Sagittal plane of motion

Question 27

Supination of the forearm occurs in what plane of motion?

Answer 27

Transverse

Question 28

Posterior interosseous nerve branches from what other nerve? Think of innervating arm

Answer 28

Branch of the radial nerve, which comes from the brachial plexus

Question 29

Chief function of what muscle is to pull the synovial membrane of the elbow? [Basketball injury]

Answer 29

Anconeus

Question 30

Insertion of the brachioradialis muscle is where?

Answer 30

The styloid process of the ulna.

Question 31

Pronator teres muscle originates where?

Answer 31

Medial epicondyle of humerus and coronoid process of ulna

Question 32

Pronator teres muscle inserts where?

Answer 32

Middle portion of radius.

Question 33

What nerve innervates the pronator teres muscle?

Answer 33

Median Nerve (C6-C7) branch of brachial plexus.

Question 34

In the context of the radial ulnar movement, what specific movement when you're facing palm down is that action called?

Answer 34

Pronation

Question 35

The radial nerve innervates all of the following muscles except which muscle?

Answer 35

Does NOT innervate pronator teres. Does innervate Triceps brachii, brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, supinator, and most of the forearm muscles

Question 36

Actions of the brachioradialis muscles include what movements?

Answer 36

Flexion of the forearm at the elbow, pronation and supination

Question 37

Radialulnar supination is performed by doing what? What muscles?

Answer 37

Performed by rotating forearm so the plan faces upwards, primary muscle involved are biceps brachii and supinator muscles

Question 38

The elbow includes what ligaments?

Answer 38

Lateral ulnar collateral ligament (LUCL) Lateral radial collateral ligament (RCL) Accessory lateral collateral ligament (ALCL) Annular ligament (AL)

Question 39

What ligament usually gets injured in sports like baseball/tennis/golf?

Answer 39

Ulnar Collateral Ligament (UCL)

Question 40

What muscle usually gets injured in sports like baseball/tennis/golf?

Answer 40

Rotator cuff in the shoulder

Question 41

Each finger has three (3) joints except the thumb which has two (2) T or F

Answer 41

False, each finger has two joints except the thumb that has one

Question 42

The fingers can only flex and extend except the MCP True or False

Answer 42

True

Question 43

In the context of wrist and hand movements, when we think of opposing movements of the palm in combination with phalanges what refers to your thumb crossing over your palm?

Answer 43

Opposition

Question 44

The three wrist flexor muscles are what?

Answer 44

Flexor carpi radialis, flexor carpi ulnaris, palmaris longus

Question 45

What are all the bones in the wrist? [SLTP/TTCH]

Answer 45

Proximal row: Scaphoid, lunate, triquetrum, and pisiform Distal row: Trapezium, trapezoid, capitate, and hamate

Question 46

What wrist bone gets the most injured?

Answer 46

Scaphoid

Question 47

The human wrist and hand have more than 30 muscles, 11 are intrinsic muscles True or False

Answer 47

False

Question 48

The muscles of the wrist and hand are innervated by the radial and medial nerves True or False

Answer 48

True

Question 49

What muscles perform extension of the index finger? [Know other fingers as well and nerve sensation]

Answer 49

Extensor indicis

Question 50

Four tendons to bases of middle and distal phalanxes of four fingers on dorsal surface

Answer 50

Extensor digitorum