Anatomy Lab: Insertion/Origin/Innervation/Action Flashcards Preview

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Flashcards in Anatomy Lab: Insertion/Origin/Innervation/Action Deck (92):
1

What is the origin and insertion of the descending part of trapezius?

Originates from the external occipital protuberance, the ligamentum nuchae, and spinous processes of C1-C7

Inserts into the lateral third of the clavicle

2

What is the origin and insertion of the transverse part of the trapezius?

Originates from the aponeuroses at the spinous processes of T1-T4

Inserts into the acromion

3

What is the origin and insertion of the ascending part of the trapezius?

Originates from the spinous processes of T5 to T12

Inserts onto the scapular spine

4

What is the innervation of the trapezius?

Innervated by Accessory nerve CN XI and Cervical plexus C3-C4

5

What is the action of the descending part of the trapezius?

Draws scapula obliquely upward, rotates glenoid cavity superiorly, tilts head to same side, and rotates head to opposite side

6

What is the action of the transverse part of the trapezius?

Draws scapula medially

7

What is the action of the ascending part of the trapezius?

Draws scapula medially downward

8

As a whole, acts to steady the scapula on the thorax

Trapezius

9

What is the origin and insertion of the levator scapulae?

Originates at the transverse process of C1-C4

Inserts at the scapula (superior angle)

10

What is the action of the levator scapulae?

Draws scapula medially upward while moving inferior angle medially and bends neck to same side

11

What is the origin and insertion of the rhomboid minor?

Originates at the spinous process of C6 and C7

Inserts at the medial border of the scapula, above the scapular spine

12

What is the origin and insertion of the rhomboid major?

Originates at the spinnous process of T1-T4

Inserts at the medial border of the scapula below the scapular spine

13

The levator scapulae, rhomboid major, and rhomboid minor are all innervated by the

Innervated by Dorsal scapular nerve (C4-C5)

14

What is the action of the rhomboid major and minor?

Steadies scapula and draws the scapula medially upward

15

What is the origin of the vertebral part of the latissimus dorsi?

Originates from the spinous processes or T7-T12 and the thoracolumbar fascia

16

What is the origin of the scapular part of the Latissimus Dorsi?

Originates from the inferior angle of the scapula

17

What is the origin of the the costal part of the Latissimus Dorsi?

Originates from ribs 9-12

18

What is the origin of the Iliac part of the Latissimus Dorsi?

Originates from the posterior third of the iliac crest

19

All parts of the Latissimus Dorsi insert on the

Insert to the Crest of the lesser tuberosity of the humerus

20

What is the innervation of all parts of the Latissimus Dorsi?

Innervated by thoracodorsal nerve (C6-C8)

21

What is the action of all parts of the Latissimus Dorsi?

Internal rotation, adduction, and extension of the upper limb, and respeiration (cough muscle)

22

What is the origin and insertion of the Teres Major?

Originates from the inferior angle of the scapula

Inserts at the crest of lesser tuberosity of humerus

23

What is the innervation of the Teres major?

Innervated by Lower subscapular nerve (C5-C7)

24

What is the action of the teres major?

Internally rotates, adducts, and extends the upper limb

25

What is the origin and insertion of the Semispinalis Capitis?

Originates from the transverse and articular processes of C4-T7

Inserts onto the occipital bone between the superior and inferior nuchal lines

26

What is the innervation of the Semispinalis Capitis?

Innervated by spinal nerves (posterior rami)

27

What is the action of the Semispinalis Capitis?

Acts BILATERALLY to extend thoracic and cervical spines and head, as well as stabilizing craniovertebral joints

Acts UNILATERALLY to bend the head and cervical/thoracis spines to the same side and rotate them to opposite sides

28

What is the origin and insertion of the Splenius Capitis?

Originates from the ligamentum nuchae and the spinous processes of C7-T3

Inserts onto the lateral superior nuchal line of occipital bone and the mastoid process of temporal bone

29

What is the innervation of the Splenius Capitis

Innervated by spinal nerve (C1-C6) (posterior rami, lateral branches)

30

What is the action of the Splenius Capitis?

BILATERALLY acts to extend cervical spine and head

UNILATERALLY acts to flex and rotate the head to the same side

31

What is the origin of the pectoralis major?

Originates at the medial clavicle (clavicular), sternum and cartilage of ribs 1-6 (sternocostal), and the anterior layer of rectus sheath (abdominal part)

32

What is the insertion of the pectoralis major?

Inserts at the crest of the greater tuberosity of humerus

33

What is the action of ALL fibers of the pectoralis major?

Act to adduct and medially rotate the shoulder

34

What is the action of the clavicular and sternocostal parts of the pectoralis major?

Act to flex the arm at the shoulder and assist in respiration when shoulder is fixed

35

The pectoralis major is innervated by?

Innervated by the lateral and medial pectoral nerve (C6, 7, 8 T1)

36

What is the origin of the pectoralis minor?

Originates from ribs 3-5

37

What is the insertion of the pectoralis minor?

Inserts the medial surface of coracoid process of the scapula

38

What is the action of the pectoralis minor?

Acts to depress, abduct, and downwardly rotate the scapula

39

With the scapula fixed, the pectoralis minor acts to

With the scapula fixed, acts to assist to elevate the thorax during forced inhalation

40

The pectoralis minor is innervated by

Medial pectoral nerve (C8-T1)

41

The clavicular part of the deltoid originates from

Originates from the lateral 1/3 of the clavicle

42

The acromial part of the deltoid originates from

Originates from the acromion

43

The spinal part of the deltoid originated from the

Originates from the scapular spine

44

All parts of the deltoid insert onto the

Insert onto the deltoid tuberosity of the humerus

45

The deltoid is innervated by

Innervated by the axillary nerve (C5-C6)

46

The clavicular part of the deltoid acts to

Acts to flex, internally rotate, and adduct the arm at the shoulder

47

The acromial part of the deltoid acts to

Acts to abduct the arm at the shoulder

48

The spinal part of the deltoid acts to

Acts to extend, externally rotate, and adduct the arm at the shoulder

49

Between 60 and 90 degrees of abduction, the clavicular and spinal parts of the deltoid assist the accromial part with

Abduction

50

The subscapularis originates from

Originates from the subscapular fossa

51

The subscapularis inserts onto the

Inserts onto the lesser tuberosity of the humerus

52

The subscapularis is innervated by

Innervated by the subscapular nerve (C5, C6)

53

What is the action of the subscapularis?

Acts to internally rotate the arm at the shoulder joint

54

The serratus anterior originates from the

Originates from the 1st to 9th ribs

55

The serratus anterior inserts onto the

Inserts onto the medial border of the scapula

56

The serratus anterior is innervated by

Innervated by the long thoracic nerve (C5, C7)

57

What is the action of the superior part of the serratus anterior?

Acts to lower a raised arm

58

What is the action of the inferior part of the serratus anterior?

Acts to rotate the scapula laterally

59

What is the action of the intermediate part of the serratus anterior?

Acts with the entire muscle to draw the scapula laterally forward and elevate the ribs when the shoulder is fixed

60

The long head of the biceps brachii originates from the

Originates from the supraglenoid tubercle of the scapula

61

The short head of the biceps brachii originates from the

Originates from the coracoid process of the scapula

62

Both heads of the biceps brachi insert onto the

Insert onto the radial tuberosity via the common tendon and the bicipital aponeurosis of the cubital fossa

63

Both heads of the biceps brachii are innervated by

Innervated by the musculocutaneous nerve (C5 to C6)

64

Both the long and short heads of the biceps brachii act to

Act to flex the elbow and supinate the forearm

Also to flex, abduct, and internally rotate the arm at the shoulder

65

The coracobrachialis originates on the

Originates on the coracoid process of the scapula

66

The coracobrachialis inserts onto the

Inserts onto the humerus in line with the crest of the lesser tuberosity

67

The corocobrachiallus is innervated by the

Innervated by the musculocutaneous nerve (C5-C7)

68

The corocobrachiallis acts to

Acts to flex, adduct, and internally rotate the arm at the shoulder

69

The brachiallis originates from the

Originates from the anterior surface of the distal half of the humerus

70

The brachiallis crosses the elbow and inserts onto the

Crosses the elbow and inserts onto the ulnar tuberosity

71

The brachialis is innervated by

Innervated by the musculocutaneous nerve (C5,C6) and the radial nerve (C7)

72

The brachialis acts to

Acts to flex the elbow joint

73

The teres minor originates from the

Originates from the lateral border of the scapula

74

The teres minor inserts onto the

Inserts onto the greater tuberosity of the humerus

75

The teres minor is innervated by the

Innervated by the axillary nerve (C5, C6)

76

The teres minor acts to

Acts to externally rotate the arm and weakly adduct the arm at the shoulder

77

The long head of the triceps brachii originates from the

Originates from the infraglenoid tubercle of the scapula

78

The long head of the triceps inserts onto the

Inserts onto the olecranon of the ulna

79

The triceps brachii is innervated by

Innervated by the Radial nerve (C6-C8)

80

The long head of the triceps brachii acts to

Acts to extend the forearm at the elbow joint and adduct the arm at the shoulder joint

81

The supraspinatus originates from the

Originates from the supraspinous fossa of the scapula

82

The supraspinatus inserts onto the

Inserts onto the greater tuberosity of the humerus

83

The supraspinatus is innervated by

Innervated by the suprascapular nerve (C4 to C6)

84

The supraspinatus acts to

Acts to abduct the arm at the shoulder joint

85

The infraspinatus origintes from the

Originates from the infraspinatous fossa of the scapula

86

The infraspinatus inserts onto the

Inserts onto the greater tuberosity of the humerus

87

The infraspinatus is innervated by

Innervated by the suprascapular nerve (C4 to C6)

88

What are the boundaries of the scapular notch?

Superior transverse scapular ligament and the scapula

89

What are the boundaries of the medial border of the scapula?

The scapula

90

What are the boundaries of the triangular space?

The teres major and minor

91

What are the boundaries of the triceps hiatus?

Triceps brachi, humerus, and teres major

92

What are the boundaries of the quadrangular space?

Teres major and minor, triceps brachii, and the humerus

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