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Structure and Function Test 1 > Anatomy Lab: Insertion/Origin/Innervation/Action > Flashcards

Anatomy Lab: Insertion/Origin/Innervation/Action Flashcards

1
Q

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

A

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

Inserts into the lateral third of the clavicle

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2
Q

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

A

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

Inserts into the acromion

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3
Q

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

A

Originates from the spinous processes of T5 to T12

Inserts onto the scapular spine

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4
Q

What is the innervation of the trapezius?

A

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

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5
Q

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

A

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

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6
Q

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

A

Draws scapula medially

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7
Q

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

A

Draws scapula medially downward

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8
Q

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

A

Trapezius

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9
Q

What is the origin and insertion of the levator scapulae?

A

Originates at the transverse process of C1-C4

Inserts at the scapula (superior angle)

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10
Q

What is the action of the levator scapulae?

A

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

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11
Q

What is the origin and insertion of the rhomboid minor?

A

Originates at the spinous process of C6 and C7

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

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12
Q

What is the origin and insertion of the rhomboid major?

A

Originates at the spinnous process of T1-T4

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

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13
Q

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

A

Innervated by Dorsal scapular nerve (C4-C5)

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14
Q

What is the action of the rhomboid major and minor?

A

Steadies scapula and draws the scapula medially upward

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15
Q

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

A

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

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16
Q

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

A

Originates from the inferior angle of the scapula

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17
Q

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

A

Originates from ribs 9-12

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18
Q

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

A

Originates from the posterior third of the iliac crest

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19
Q

All parts of the Latissimus Dorsi insert on the

A

Insert to the Crest of the lesser tuberosity of the humerus

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20
Q

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

A

Innervated by thoracodorsal nerve (C6-C8)

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21
Q

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

A

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

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22
Q

What is the origin and insertion of the Teres Major?

A

Originates from the inferior angle of the scapula

Inserts at the crest of lesser tuberosity of humerus

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23
Q

What is the innervation of the Teres major?

A

Innervated by Lower subscapular nerve (C5-C7)

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24
Q

What is the action of the teres major?

A

Internally rotates, adducts, and extends the upper limb

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25
Q

What is the origin and insertion of the Semispinalis Capitis?

A

Originates from the transverse and articular processes of C4-T7

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

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26
Q

What is the innervation of the Semispinalis Capitis?

A

Innervated by spinal nerves (posterior rami)

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27
Q

What is the action of the Semispinalis Capitis?

A

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

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28
Q

What is the origin and insertion of the Splenius Capitis?

A

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

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29
Q

What is the innervation of the Splenius Capitis

A

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

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30
Q

What is the action of the Splenius Capitis?

A

BILATERALLY acts to extend cervical spine and head

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

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31
Q

What is the origin of the pectoralis major?

A

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

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32
Q

What is the insertion of the pectoralis major?

A

Inserts at the crest of the greater tuberosity of humerus

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33
Q

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

A

Act to adduct and medially rotate the shoulder

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34
Q

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

A

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

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35
Q

The pectoralis major is innervated by?

A

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

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36
Q

What is the origin of the pectoralis minor?

A

Originates from ribs 3-5

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37
Q

What is the insertion of the pectoralis minor?

A

Inserts the medial surface of coracoid process of the scapula

38
Q

What is the action of the pectoralis minor?

A

Acts to depress, abduct, and downwardly rotate the scapula

39
Q

With the scapula fixed, the pectoralis minor acts to

A

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

40
Q

The pectoralis minor is innervated by

A

Medial pectoral nerve (C8-T1)

41
Q

The clavicular part of the deltoid originates from

A

Originates from the lateral 1/3 of the clavicle

42
Q

The acromial part of the deltoid originates from

A

Originates from the acromion

43
Q

The spinal part of the deltoid originated from the

A

Originates from the scapular spine

44
Q

All parts of the deltoid insert onto the

A

Insert onto the deltoid tuberosity of the humerus

45
Q

The deltoid is innervated by

A

Innervated by the axillary nerve (C5-C6)

46
Q

The clavicular part of the deltoid acts to

A

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

47
Q

The acromial part of the deltoid acts to

A

Acts to abduct the arm at the shoulder

48
Q

The spinal part of the deltoid acts to

A

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

49
Q

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

A

Abduction

50
Q

The subscapularis originates from

A

Originates from the subscapular fossa

51
Q

The subscapularis inserts onto the

A

Inserts onto the lesser tuberosity of the humerus

52
Q

The subscapularis is innervated by

A

Innervated by the subscapular nerve (C5, C6)

53
Q

What is the action of the subscapularis?

A

Acts to internally rotate the arm at the shoulder joint

54
Q

The serratus anterior originates from the

A

Originates from the 1st to 9th ribs

55
Q

The serratus anterior inserts onto the

A

Inserts onto the medial border of the scapula

56
Q

The serratus anterior is innervated by

A

Innervated by the long thoracic nerve (C5, C7)

57
Q

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

A

Acts to lower a raised arm

58
Q

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

A

Acts to rotate the scapula laterally

59
Q

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

A

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

60
Q

The long head of the biceps brachii originates from the

A

Originates from the supraglenoid tubercle of the scapula

61
Q

The short head of the biceps brachii originates from the

A

Originates from the coracoid process of the scapula

62
Q

Both heads of the biceps brachi insert onto the

A

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

63
Q

Both heads of the biceps brachii are innervated by

A

Innervated by the musculocutaneous nerve (C5 to C6)

64
Q

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

A

Act to flex the elbow and supinate the forearm

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

65
Q

The coracobrachialis originates on the

A

Originates on the coracoid process of the scapula

66
Q

The coracobrachialis inserts onto the

A

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

67
Q

The corocobrachiallus is innervated by the

A

Innervated by the musculocutaneous nerve (C5-C7)

68
Q

The corocobrachiallis acts to

A

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

69
Q

The brachiallis originates from the

A

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

70
Q

The brachiallis crosses the elbow and inserts onto the

A

Crosses the elbow and inserts onto the ulnar tuberosity

71
Q

The brachialis is innervated by

A

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

72
Q

The brachialis acts to

A

Acts to flex the elbow joint

73
Q

The teres minor originates from the

A

Originates from the lateral border of the scapula

74
Q

The teres minor inserts onto the

A

Inserts onto the greater tuberosity of the humerus

75
Q

The teres minor is innervated by the

A

Innervated by the axillary nerve (C5, C6)

76
Q

The teres minor acts to

A

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

77
Q

The long head of the triceps brachii originates from the

A

Originates from the infraglenoid tubercle of the scapula

78
Q

The long head of the triceps inserts onto the

A

Inserts onto the olecranon of the ulna

79
Q

The triceps brachii is innervated by

A

Innervated by the Radial nerve (C6-C8)

80
Q

The long head of the triceps brachii acts to

A

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

81
Q

The supraspinatus originates from the

A

Originates from the supraspinous fossa of the scapula

82
Q

The supraspinatus inserts onto the

A

Inserts onto the greater tuberosity of the humerus

83
Q

The supraspinatus is innervated by

A

Innervated by the suprascapular nerve (C4 to C6)

84
Q

The supraspinatus acts to

A

Acts to abduct the arm at the shoulder joint

85
Q

The infraspinatus origintes from the

A

Originates from the infraspinatous fossa of the scapula

86
Q

The infraspinatus inserts onto the

A

Inserts onto the greater tuberosity of the humerus

87
Q

The infraspinatus is innervated by

A

Innervated by the suprascapular nerve (C4 to C6)

88
Q

What are the boundaries of the scapular notch?

A

Superior transverse scapular ligament and the scapula

89
Q

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

A

The scapula

90
Q

What are the boundaries of the triangular space?

A

The teres major and minor

91
Q

What are the boundaries of the triceps hiatus?

A

Triceps brachi, humerus, and teres major

92
Q

What are the boundaries of the quadrangular space?

A

Teres major and minor, triceps brachii, and the humerus

Structure and Function Test 1 (61 decks)

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