Exam 5 Upper Extremity 52X Flashcards Preview

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Flashcards in Exam 5 Upper Extremity 52X Deck (86)
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31

The musculocutaneous Nerve passes through what muscle and continues distally between what two muscles, innervating all three as it passes?

-Passes through: Coracobrachilis Muscle
-Between: Biceps Brachii and Brachialis Muscles

32

The Musculocutaneous nerve arise from where?

Brachial Plexus

33

What is significant about the level of the elbow for the Musculocutaneous Nerve?

-Above Elbow: Muscular innervation
-Below Elbow: Cutaneous innervation

34

The Musculocutaneous Nerve terminates as what nerve and what is innervated by it?

-Lateral Antebrachial Cutaneous Nerve (AKA Lateral Cutaneous Nerve of the Forearm)
-Innervates: Large lateral portion of forearm

35

Which Nerve arises from contribution of medial and lateral cords of the brachial plexus and does not give off any branches in the arm? Where does it branch?

-Median Nerve
-Branches: supply forearm and hand

36

The Trochlear Notch (at elbow) is formed by what?

Coronoid Process and Olecranon

37

What Type and classification does the Elbow Joint have?

-Type: Synovial Joint
-Classified: Hinge Joint

38

What does the elbow permit?

Flexion and Extension of Forearm

39

What reinforces the weak articular capsule (lined by synovial membrane) of the elbow?

Collateral ligaments which limit side to side movement

40

The radial collateral ligament extends from where and goes to where?

Lateral Epicondyle of Humerus to Radial notch of ulna

41

What is the name of the ligament that surrounds the head of the radius?

Anular Ligament

42

The Ulnar collateral ligament extends from where and goes to where?

Medial Epicondyle of Humerus to Coronoid Process and Olecranon of the Ulna

43

What is Subluxation?

Incomplete or partial dislocation of a joint or organ

44

What is the difference between Golfer's Elbow and Tennis Elbow?

Golfer's Elbow: Medial Epicondylitis
Tennis Elbow: Lateral Epicondylitis

45

What is the thin, strong, fibrous membrane that joins the radius and ulna of the forearm an provides attachment for some deep forearm muscles?

Interosseous Membrane

46

The interosseous membrane provides the general plane for dividing the forearm into what compartments?

Posterior (Extensor) Compartment
-Deep
-Superficial
Anterior (Flexor) Compartment
-Deep
-Superficial

47

The Anterior Compartment of the forearm contains muscles that complete what actions?

Flexors and Pronators

48

The Posterior Compartment of the forearm contains muscles that complete what actions?

Extensors and Supinator's

49

The muscles of the Superficial Anterior (Flexor) compartment originate where and typically insert where?

Origin: Medial Epicondyle of Humerus
Insert: Carpals, Metacarpals, and Phalanges

50

The muscles of the superficial anterior (flexor) compartment have what function?

Flexors (and bellies of muscles form bulk of forearm)

51

What are the names of the muscles of the Superficial anterior (flexor) compartment?

-Pronator teres
-Flexor carpi radialis
-Palmaris longus
-Flexor carpi ulnaris
-Flexor digitorum superficialis

52

What are the muscles of the Deep anterior (flexor) compartment, in which insert on the base of the distal phalanges and function as flexors?

-Flexor pollicis longus
-Flexor digitorum profundus
-Pronator quadratus

53

What are the Muscles of the Superficial posterior (extensor) compartment? name from lateral to medial

-Brachioradialis
-Extensor carpi radialis longus
-Extensor carpi radialis brevis
-Extensor digitorum
-Extensor digiti minimi
-Extensor carpi ulnaris

54

Which muscles of the superficial posterior (extensor) compartment have their origin more distal portion of the Humerus and are innervated by the radial nerve?

-Brachioradialis
-Extensor carpi radialis longus

55

Which muscles of the superficial posterior (extensor) compartment have their origin on the lateral epicondyle of the Humerus and are innervated by the deep radial nerve?

-Extensor carpi radialis brevis
-Extensor digitorum
-Extensor digiti minimi
-Extensor carpi ulnaris

56

The Brachioradialis reflex (AKA Supinator reflex) is carried by which nerve and mediate where?

Radial Nerve
Mediated at: C5 - C6 spinal nerves

57

What are the muscles of the deep posterior (extensor) compartment?

Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
extensor indicis

58

Pronation is essentially a function of which nerve and Supination is essentially a function of which nerve?

Pronation: Median Nerve
Supination: Musculocutaneous and Radial Nerves

59

Which muscles are responsible for Pronation?

-Pronator teres
-Pronator quadratus
-Brachioradialis

60

Which muscle pronates the forearm at the radioulnar joint?

Pronator quadratus