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Principles of Human Movement > Exam 3: Wrist, Hands, and Elbow > Flashcards

Exam 3: Wrist, Hands, and Elbow Flashcards

1
Q

Joint formed by radius and capitulum

A

Radiocapitellar

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2
Q

Bending the elbow decreases its angle

A

Flexion

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3
Q

Much larger at the distal end

A

Radius

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4
Q

Hand moving from palm up to palm down

A

Pronation

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5
Q

Straightening the elbow to increase angle

A

Extension

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6
Q

Much larger at the proximal end

A

Ulna

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7
Q

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

A

scapula

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8
Q

Classification of radioulnar joint [Pivot joint]

A

Trochoid

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9
Q

Joint formed by the radius and ulna

A

Radioulnar

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10
Q

hand moving from palm down to palm up

A

supination

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11
Q

Other proximal attachment for muscles that flex and extend the elbow

A

Humerus

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12
Q

Elbow joint is hinge joint or

A

ginglymus

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13
Q

Upper half of the posterior surface of the humerus

A

Triceps Brachii Lateral head

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14
Q

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

A

Brachioradialis

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15
Q

Middle 1/3 of the lateral surface of the radius

A

Pronator Teres

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16
Q

Distal 1/4 of the anterior side of the ulna

A

Pronator quadratus

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17
Q

Supraglenoid tubercle above the superior lip of the glenoid fossa

A

Biceps brachii long head

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18
Q

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

A

Supinator

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19
Q

Coronoid process of the ulna

A

Brachialis

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20
Q

Posterior surface of the lateral condyle of the humerus

A

Aconeus

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21
Q

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

A

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

22
Q

Lateral supracondylar ridge is in an anatomical position located where?

A

Lateral border of the Humerus

23
Q

Distal attachment of the radioulnar joint is located where?

A

Styloid process of the Ulna

24
Q

Ulna is much larger proximally than the radius True or False

A

True

25
Q

Where is the olecranon process located?

A

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

26
Q

Flexion of the elbow occurs in what plane of motion?

A

Sagittal plane of motion

27
Q

Supination of the forearm occurs in what plane of motion?

A

Transverse

28
Q

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

A

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

29
Q

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

A

Anconeus

30
Q

Insertion of the brachioradialis muscle is where?

A

The styloid process of the ulna.

31
Q

Pronator teres muscle originates where?

A

Medial epicondyle of humerus and coronoid process of ulna

32
Q

Pronator teres muscle inserts where?

A

Middle portion of radius.

33
Q

What nerve innervates the pronator teres muscle?

A

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

34
Q

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

A

Pronation

35
Q

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

A

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

36
Q

Actions of the brachioradialis muscles include what movements?

A

Flexion of the forearm at the elbow, pronation and supination

37
Q

Radialulnar supination is performed by doing what? What muscles?

A

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

38
Q

The elbow includes what ligaments?

A

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

39
Q

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

A

Ulnar Collateral Ligament (UCL)

40
Q

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

A

Rotator cuff in the shoulder

41
Q

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

A

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

42
Q

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

A

True

43
Q

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?

A

Opposition

44
Q

The three wrist flexor muscles are what?

A

Flexor carpi radialis, flexor carpi ulnaris, palmaris longus

45
Q

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

A

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

46
Q

What wrist bone gets the most injured?

A

Scaphoid

47
Q

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

A

False

48
Q

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

A

True

49
Q

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

A

Extensor indicis

50
Q

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

A

Extensor digitorum

Principles of Human Movement (2 decks)

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