Midterm Anatomy - Nerve Artery O/I Action Flashcards Preview

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Flashcards in Midterm Anatomy - Nerve Artery O/I Action Deck (114)
1

Superficial muscles of the back

Latissimus Dorsi
Levator Scapulae
Rhomboid Major
Rhomboid Minor
Trapezius

2

Lat Dorsi Origin and Insertion

Origin: Spines of T7 to sacrum, posterior third of iliac crest, and the lower ribs
Inserts in the humeral intertubercular groove

3

Lat Dorsi Action

Extends and medially rotates the arm

4

Lat Dorsi innervation

Thoracodorsal nerve from C7 and C8

5

Lat Dorsi Artery

Thoracodorsal artery

6

Levator Scap origin and insertion

Origin: Transverse process of C1-C4
Insert: Medial border of scapula from superior angle to the spine

7

Action of levator Scap

Elevates scapula

8

Innervation of levator scap

Dorsal scapular nerve from C5. Upper part of this muscle also receives branches from C3 and C4

9

Artery for levator scap

Dorsal scapular artery

10

Rhomboid major origin and insertion

Origin: Spines of T2-T5
Insert: Medial border of scapula inferior to the spine

11

Rhomboid major Action

Retracts, elevates, and rotates the scapula inferiorly

12

Innervation of Rhomboid major

Dorsal scapular nerve from C5

13

Artery for Rhomboid major

Dorsal scapular artery

14

Rhomboid minor origin and insertion

Origin: Spines of C7 to T1
Insertion: Medial border of scapula at the spine

15

Action of rhomboid minor

Retracts, elevates and rotates the scapula inferiorly

16

Artery for the rhomboid minor

Dorsal scapular

17

Trapezius origin and insertion

Origin: Medial third of superior nuchal line, external occipital protuberance, nuchal ligament, and spinous processes of C7-T12
Insert: Lateral third of clavicle, medial side of acromion and upper crest of the scapular spine

18

Action of the trapezius

Elevates and depresses the scapula, superiorly rotates the scapula and retracts scapula

19

Innervation of Trapezius

Motor: Spinal acessory nerve (XI)
Sensation: C3/C4

20

Artery for trapezius

Transverse cervical artery

21

Intermediate group of back muscles

Serratus posterior inferior
Serratus posterior superior

22

Origin and Insertion for serratus posterior inferior

O: Thoracolumbnar fascia and spines of T11-L2
I: Ribs 9-12

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Action of serratus posterior inferior

Pulls down the lower ribs

24

Innervation of the serratus posterior inferior

Ventral branches of primary rami from T9-T12

25

Artery for serratus posterior inferior

Subcostal artery, posterior intercostal artery, first two lumbar arteries

26

O/I for serratus posterior superior

O: Nuchal ligament, spines of C7, and T1-T3
I: Ribs 1-4

27

Action of serratus posterior superior

Elevates upper ribs

28

Nerve for serratus posterior superior

Ventral branches of primary rami from T1-T4

29

Artery for serratus posterior superior

Posterior intercostal arteries

30

Deep back muscles

Splenius capitis and cervicis

31

Difference between splenius capitis and cervicis?

Everything is the same except where they insert. Capitis inserts on the Mastoid process and lateral end of the superior nuchal line and thecervis inserts on the posterior tubercles of the transverse processes of C1-C3

32

Origin of splenius muscles

Nuchal ligament and spines of C7-T6

33

Action of splenius muscles

Extends and laterally bends the neck and head as well as rotates the head to the same side

34

Innervation of splenius muscles

Dorsal primary rami of C2-C6

35

Artery for splenius muscles

Deep cervical artery and posterior intercostal arteries

36

Intermediate layer of Back muscles

Erector Spinae muscles

37

What are the erector spinae muscles

Iliocostalis, longissimus and the spinalis and in all purposes, the semispinalis

38

O/I of the illiocostalis

O: Iliac crest and sacrum
I: Ribs

39

Action of the erector spinae muscles

Extends and laterally bends the trunck and neck

40

Innervation of the iliocostalis

Dorsal primary rami of C4-S5

41

Arteries for erector spinae muscles

Deep cervical arteries, posterior intercostal arteries, subcostal arteries and lumbar arteries

42

O/I for longissimus

Origin: Transverse process of lower vertebrae
I: Transverse process of superior vertebrae AND mastoid process

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Nerve for longissimus

Dorsal primary rami of spinal nerves C1-S1

44

Spinalis O/I

O: Spinous processes of inferior vertebrae
I: Spinous processes of superior vertebrae and base of the skull

45

Innervation of spinalis

Dorsal primary rami of spinal nerves C2-L3

46

O/I of semispinalis

O: Transverse processes of C7-T12
I: Capitis: Between nuchal lines of the skull
Thoracis/Cervicis: Spines of C3 to C7

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Action of semispinalis

Extends and laterally bends the trunk AND rotates trunk to the opposite side

48

Innervation of Semispinalis

Dorsal primary rami of C1-T12

49

Artery for Semispinalis

Same as the other erector spinae muscles

50

Suboccipital triangle?

Obliquus capitis inferior and superior and rectus capitis posterior major

51

O/I of obliquus capitis inferior

O: Spine of the axis
I: Transverse process of atlas

52

Action of the obliquus capitis inferior

Rotates head to the same side

53

Nerve for all suboccipital muscles?

Suboccipital nerve (DPR from C1)

54

Artery for all suboccipital muscles

Occippital artery

55

O/I for obliquus capitis superior

O: Transverse process of atlas
I: Above inferior nuchal line

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Action of obliquus capitis superior

Extends the head and rotates the head to the same side

57

O/I for rectus capitis posterior major

O: Spinous process of axis
I: Lateral portion of Inferior nuchal line

58

Action of rectus capitis posterior major

Extends the head and rotates it to the same side

59

O/I for rectus capitis posterior minor

O: Posterior tubercle of the atlas
I: Medial portion of inferior nuchal line

60

Action of rectus capitis posterior minor

Extends the head

61

O/I for deltoid

O: Lateral third of clavicle, acromion and spine of scapula
I: Deltoid tuberosity of humerus

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Action of deltoid

Abducts the arm, extend, flex, medially and laterally rotate the arm

63

Nerve of deltoid

Axillary nerve

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Artery from the deltoid

Posterior circumflex humeral artery

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O/I supraspinatous

O: Supraspinous fossa
I: Greater tuberlce of the humerus

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Action of supraspinatous

First 10-20 degrees of abduction of the arm

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Nerve for supraspinatous

Suprascapular nerve

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Artery for supraspinatous

Suprascapular artery

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O/I for infraspinatous

O: Infraspinatous fossa
I: Greater tubercle of humerus

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Action of infraspinatous

Laterally rotates the arm

71

Nerve for infraspinatous

Suprascapular nerve

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Artery for infraspinatous

suprascapular artery

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Teres minor O/I

O: Upper lateral border of scapula
I: Greater tubercle of the humerus

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Action of teres minor

Laterally rotates the arm

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Nerve for teres minor

Axillary nerve

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Artery for teres minor

Circumflex scapular artery

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Teres Major O/I

O: Dorsal surface of inferior angle of scapula
I: Lesser tubercle of humerus

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Action of teres major

Adducts the arm and medially rotates it

79

Nerve for teres major

Lower Subscap nerve

80

Artery for teres major

Circumflex scapular artery

81

Subscapularis O/I

O: Subscpular fossa of scapula
I: Lesser tubercle of the humerus

82

Action of subscapularis

Medially rotates the arm

83

Nerve of subscapularis

Upper and lower Subscap nerve

84

Artery for subscapularis

Subscapular artery

85

Pec Major O/I

O: Medial half of clavicle, manubrium, body of sternum, ribs 2-6
I: Greater tubercle of humerus

86

Action of Pec major

Flexes and adducts the arm

87

Nerve for pec major

Medial and lateral pectoral nerves

88

Artery for pec major

Pectoral branch of the thoracoacromial trunk

89

Pec minor O/I

O: Ribs 3-5
I: Coracoid process of the scapula

90

Action of pec minor

Draws scapula forward, medial and down

91

Nerve for pec minor

Medial pectoral nerve

92

Artery for pec minor

Pectoral branch of the thoracoacromial trunk

93

Serratus anterior O/I

O: Ribs 1-8
I: Medial border of scapula

94

Serratus anterior action

Draws scapula forward and rotate scapula superiorly

95

Nerve for serratus anterior

Long Thoracic

96

Artery for serratus anterior

Lateral thoracic artery

97

Biceps brachii O/I

O: Short head on the coracoid process of the scapula, the long head on the supraglenoid tubercle of the scapula
I: Radial tuberosity

98

Action of biceps brachii

Flexes the forearm and supinates the the arm. The long head also flexes the arm

99

Nerve for biceps brachii

Musculocutaneous

100

Artery for biceps brachii

Brachial artery

101

Brachialis O/I

O: Anterior surface of lower one half of the humerus
I: Coranoid process of the ulna

102

Action of brachialis

Flexes forearm

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Nerve of brachialis

Musculocutaneous nerve

104

Artery for brachialis

Brachial artery

105

Coracobrachialis O/I

O: Coracoid process of the scapula
I: Medial middle of humerus

106

Action of coracobracialis

Flexion and adduction of the arm

107

Nerve for coracobrachialis

Musculocutaneous nerve

108

Artery for coracobrachialis

Brachial artery

109

Triceps O/I

O: Long head on the infraglenoid tubercle of scapula, lateral head on the posterolateral humerus, medial head on the posteromedial inferior surface of humerus

I: Olecranon process

110

Action of triceps

Extends the forearm. Thel ong head extends and adducts the arm

111

Nerve for triceps

Radial

112

Artery for triceps

Deep Brachial profundus artery

113

Brachioradialis O/I

O: Lateral supracondyle of humerus
I: Styloid process of radius

114

Action of brachioradialis

Flexes elbow and assists in pronation/supination