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MSK Final > UE Myology > Flashcards

UE Myology Flashcards

1
Q

What are the thoracioappendicular muscles?

A
  1. Pectoralis Major m. 2. Pectoralis Minor m. 3. Subclavius m. 4. Serratus Anterior m.
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2
Q

What is the action of the pectoralis major m. ?

A

ADduct and medially rotate the humerus

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3
Q

Where does the pectoralis major muscle insert onto?

A

The lateral edge of the intertubercular groove of the humerus

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4
Q

What is the action of the pectoralis minor m. ?

A

Stabilizes the scapula

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5
Q

What is the action of the serratus anterior m.?

A

Protracts the scapula, stabilizes the scapula, rotates the glenoid cavity superiorly

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6
Q

Injury to the Long Thoracic N. results in what?

A

Paralysis of the Serratus Anterior m.

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7
Q

What does paralysis of the serratus anterior muscle cause?

A

“winging” of the scapula away from the thoracic wall, which makes abducting the upper limb beyond the horizontal position difficult

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8
Q

What is the action of the anterior part of the deltoid muscle?

A

flex and medially rotate the humerus

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9
Q

What is the action of the middle part of the deltoid m.?

A

ABduct the humerus

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10
Q

What is the action of the posterior part of the deltoid m.?

A

Extend and laterally rotate the humerus

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11
Q

Where does the subscapularis muscle insert onto?

A

the lesser tubercle of the humerus (anterior aspect)

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12
Q

What is the action of the subscapularis muscle?

A

Medially rotate and ADduct the humerus

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13
Q

Where does the supraspinatus muscle insert onto?

A

The greater tubercle of the humerus (posterior aspect)

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14
Q

What is the action of the supraspinatus muscle?

A

ABduct the humerus

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15
Q

Where does the infraspinatus muscle insert onto?

A

the greater tubercle of the humerus (posterior aspect)

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16
Q

What is the action of the infraspinatus muscle?

A

laterally rotate the humerus

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17
Q

Where does the teres minor muscle insert onto?

A

the greater tubercle of the humerus (posterior aspect)

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18
Q

What is the action of the teres minor muscle?

A

Laterally rotates the humerus

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19
Q

What are the muscles involved in the rotator cuff?

A

The supraspinatus, the infraspinatus, teres minor, and subscapularis muscle.

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20
Q

What is the primary action of the muscles involved in the rotator cuff?

A

to hold the humeral head in the glenoid cavity

21
Q

Where does the teres major muscle insert onto?

A

The medial edge of the intertubercular groove of the humerus (anterior aspect)

22
Q

What is the action of the teres major muscle?

A

ADduct and medially rotate the humerus

23
Q

What muscle is the most commonly injured in the rotator cuff?

A

The supraspinatus muscle

24
Q

Where is the origin for the long head of the biceps brachii muscle?

A

Supraglenoid tubercle of the scapula

25
Q

Where is the origin for the short head of the biceps brachii muscle?

A

The coracoid process of the scapula

26
Q

Where is the insertion for the biceps brachii muscle?

A

the radial tuberosity and the antebrachial fascia as the bicipital aponeurosis

27
Q

What is the action of the biceps brachii muscle?

A

flex the humerus, flex the forearm, and supinate the forearm

28
Q

What is the action of the coracobrachialis muscle?

A

flex and adduct the humerus

29
Q

Where is the insertion for the brachialis muscle?

A

ulnar tuberosity and coronoid process

30
Q

What is the action of the brachialis muscle?

A

Flex the forearm

31
Q

What are the anterior compartment brachial muscles?

A

Biceps brachii muscle, coracobrachialis muscle, and brachialis muscle

32
Q

What are the posterior compartment brachial muscles?

A

Triceps brachii muscle and anconeus muscle

33
Q

Where does the long head of the triceps brachii muscle originate from?

A

the infraglenoid tubercle of the scapula

34
Q

Where does the lateral head of the triceps brachii muscle originate from?

A

the posterior aspect of the humeral body-lateral side

35
Q

Where does the medial head of the triceps brachii muscle originate from?

A

posterior aspect of the humeral body-more medial side

36
Q

Where does the triceps brachii muscle insert?

A

the olecranon of the ulna and antebrachial fossa

37
Q

What is the action of the triceps brachii muscle?

A

Extend the forearm

38
Q

What is the origin of the anconeus muscle?

A

lateral humeral epicondyle

39
Q

Where does the anconeus muscle insert?

A

Lateral aspect of the olecranon

40
Q

What is the action of the anconeus muscle?

A

Extends the forearm

41
Q

What are the scapulohumeral muscles?

A
  1. Deltoid Muscle 2. subscapularis muscle 3. Supraspinatus muscle 4. Infraspinatus muscle
42
Q

What muscles are in the superficial layer of flexors in the forearm?

A
  1. Pronator Teres muscle 2. flexor carpi radialis muscle 3. palmaris longus muscle 4. flexor carpi ulnaris muscle
43
Q

What is the action of the pronator teres muscle?

A

pronate and flex the forearm

44
Q

What is the action of the flexor carpi radialis muscle?

A

flex forearm, flex and ABduct hand at the wrist

45
Q

What is the action of the flexor carpi ulnaris muscle?

A

flex forearm, flex and ADduct the hand at the wrist

46
Q

What is the muscle in the intermediate layer of flexors of the forearm?

A

Flexor digitorum superficialis muscle

47
Q

What are the muscles in the deep layer of flexors in the forearm?

A

Flexor digitorum profundus muscle, flexor pollicis longus muscle, pronator quadratus muscle

48
Q

Where does the pectoralis minor insert into?

A

Coracoid process of the scapula

MSK Final (16 decks)

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