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Gross anatomy second exam > muscles of the Upper limb > Flashcards

muscles of the Upper limb Flashcards

0
Q

Deltoid distal attachment

A

Deltoid tuberosity of humerus

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1
Q

Deltoid origin

A

Lateral third of the clavicle, acromion and spine of the scapula

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2
Q

Deltoid innervation

A

Axillary nerve C5, C6

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3
Q

Deltoid actions

A

anterior part flexes and medially rotates shoulder joint, middle abducts shoulder joint, posterior extends and laterally rotates shoulder joint

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4
Q

Supraspinatus proximinal attachment

A

supraspinous fossa of scapula

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5
Q

Infraspinatus proximal attachment

A

Infraspinatus fossa of scapula

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6
Q

teres minor proximal attachment

A

middle part of lateral border of scapula

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7
Q

teres major proximal attachment

A

Inferior part of lateral border of scapula and posterior surface of inferior angle of scapula

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8
Q

Subscapularis proximal attachment

A

Subscapular fossa (most of the anterior surface)

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9
Q

Supraspinatus distal attachment

A

Superior facet of the grater tubercle of humerus

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10
Q

Infraspinatus distal attachment

A

middle facet of the greater tubercle of humerus

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11
Q

Teres minor distal attachment

A

inferior facet of the greater tubercle of humerus

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12
Q

teres major distal attachment

A

medial lip of intertubercular sulcus of humerus

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13
Q

Subscapularis distal attachment

A

lesser tubercle of humerus

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14
Q

Supraspinatus innervation

A

Suprascapular nerve C4, C5, C6

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15
Q

Infraspinatus innervation

A

Suprascapular nerve C5, C6

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16
Q

Teres major innervation

A

lower subscapular nerve C5, C6

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17
Q

subscapularis innervation

A

Upper and lower subscapular nerves C5, C6, C7

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18
Q

Supraspinatus actions

A

Initiates and assists deltoid in abduction of shoulder joint and acts with other rotator cuff muscles

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19
Q

Infraspinatus actions

A

Laterally rotate shoulder joint help hold humeral head in glenoid cavity of scapula

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20
Q

teres minor actions

A

Laterally rotate shoulder joint, help hold humeral head in glenoid cavity of scapula

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21
Q

teres major actions

A

Adducts and medially rotates shoulder joint

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22
Q

Subscapularis actions

A

Medially rotates and adducts shoulder joint helps hold humeral head in glenoid cavity.

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23
Q

Teres minor innervation

A

Axillary nerve C5, C6

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24
Q

Pectoralis major Proximal attachment

A

Clavicular head: anterior surface of medial half of clavicle

Sternocostal head: anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle

25
Q

Pectoralis minor Proximal attachment

A

3rd to 5th ribs near their costal cartilages

26
Q

Subclavius Proximal attachment

A

Junction of 1s rib and its costal cartilage

27
Q

Serratus anterior Proximal attachment

A

external surfaces of lateral parts of 1st-8th ribs

28
Q

Pectoralis Major distal attachment

A

Lateral lip of intertubercular sulcus groove of humerus

29
Q

Pectoralis minor distal attachment

A

Medial border and superior surface of coracoid process of scapula

30
Q

Subclavius distal attachment

A

Inferior surface of middle theird clavicle

31
Q

Serratus anterior distal attachment

A

Anterior surface of medial border of scapula

32
Q

Pectoralis major Innervation

A

Lateral and medial pectoral nerves, clavicular head = C5, C6, Sternocostal head = C7, C8, T1

33
Q

Pectoralis minor Innervation

A

medial pectoral nerve C8 and T1

34
Q

Subclavius innervation

A

Subclavian nerve C5 and C6

35
Q

Serratus anterior Innervation

A

Long thoracic nerve C5, C6 and C7

36
Q

Pectoralis major actions

A

Adducts and medially rotates shoulder joint, draws scapula anteriorly and inferiorly,

Acting alone clavicular head flexes shoulder joint and sternocostal head extends it from the flexed position

37
Q

Pectoralis minor actions

A

Stabilizes scapula by drawing inferiorly and anteriorly against thoracic wall

38
Q

Subclavius actions

A

Anchors and depresses clavicle

39
Q

Serratus anterior actions

A

Protracts scapula and holds against thoracic wall, rotates scapula

40
Q

Biceps Brachii Proximal attachment

A

Short head: tip of coracoid process of scapula

Long head: supraglenoid tubercle of scapula

41
Q

Brachialis Proximal attachment

A

Distal half of anterior surface of humerus

42
Q

Coracobrachialis Proximal attachment

A

tip of coracoid process of scapula

43
Q

Triceps brachii Proximal attachment

A

Long head: infraglenoid tubercle of scapula
Lateral head: posterior surface of humerus, superior to radial groove
medial head: posterior surface of humerus, inferior to radial groove

44
Q

Biceps Brachii Distal attachment

A

tuberosity of radius and fascia of forearm via bicepital aponeurosis

45
Q

Brachialis Distal attachment

A

coronoid process and tuberosity of ulna

46
Q

Coracobrachialis Distal attachment

A

middle third of medial surface of humerus

47
Q

Triceps Brachii Distal attachment

A

proximal end of olecranon of ulna and fascia of forearm

48
Q

Biceps brachii innervation

A

Musculocutaneous nerve C5, C6

49
Q

Brachialis Innervation

A

Musculocutaneous nerve C5, C6

50
Q

Coracobrachialis innervation

A

Musculocutaneous nerve C5, C6, C7

51
Q

Triceps brachii innervation

A

Radial nerve C6, C7, C8

52
Q

Biceps brachii actions

A

supinates forearm and when it is supinated flexes elbow joint; flexes shoulder joint; short head resists dislocation of shoulder

53
Q

brachialis actions

A

flexes elbow joint in all positions

54
Q

Coracobrachialis actions

A

Helps flex and adduct shoulder joint, resists dislocation of shoulder

55
Q

triceps brachii actions

A

chief extensor of elbow joints; long head extends shoulder joint and resists dislocation of humerus (especially important during abduction)

56
Q

Omohyoid origin

A

superior border of the scapula near the suprascapular notch

57
Q

Omohyoid insertion

A

inferior border of hyoid

58
Q

omohyoid innervation

A

C1-C3 (by a brach of ansa cervicalis)

59
Q

omohyoid action

A

depresses, retracts, and steadies hyoid

Gross anatomy second exam (4 decks)

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