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Comp Exam > Muscles > Flashcards

Muscles Flashcards

1
Q

Insertion trapezius

A

Spine of scapula
Acromion
Lateral 1/3 clavicle

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2
Q

Nerves of Trapezius

A

CN XI

C3, C4

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3
Q

Action of trapezius

A

Adduct
Elevates
Depresses
Rotates

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4
Q

Levator Scapulae Origin and Insertion

A

O: Transverse processes of C1-C4

I: sup medial border scapula

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5
Q

Levator Scap inner cation

A

Dorsal scapular nerve

C3, C4

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6
Q

Levator Scap action

A

Adducts scapula

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7
Q

Rhomboid Minor o and i

A

O: spines of C7-T1

I: root of spine of scapula

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8
Q

Rhomboid major o and i

A

O: spines of T2-T5

I: medial border of scapula

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9
Q

Rhomboids innervation

A

Dorsal scapular nerve, C5

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10
Q

Rhomboids action

A

Addicts scapula

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11
Q

Latissimus dorsi o and i

A

O: spines of T5-T12
Thoracolumbar fascia
Iliacrest
Ribs 9-12

I: floor of bicipital groove of humerus

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12
Q

Lat dorsi nerve

A

Thoracodorsal nerve

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13
Q

Lat dorsi action

A

Addicts
Extends
Rotates arm medically (IR)

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14
Q

Serratus posterior superior o and i

A

O: ligamentum nuchae
Supraspinous ligament
Spines of C7-T3

I: upper border of ribs 2-5

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15
Q

Serratus posterior superior innervation

Serratus posterior inferior innervation

A

SPS: first 4 intercostal nerves

SPI: last 4 intercostal nerves

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16
Q

Serratus posterior superior action

Serratus posterior inferior action

A

SPS: elevates ribs

SPI: depresses ribs

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17
Q

Serratus posterior inferior o and i

A

O: supraspinous lig
Spines T11-L3

I: lower border of ribs 9-12

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18
Q

Serratus anterior o and i

A

O: outer surface ribs 1-8

I: medial border scapulae

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19
Q

Serratus anterior innervation and action

A

I: long thoracic nerve

A: abducts and protracts scapula

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20
Q

Erector Spinae muscles action

A

Bilaterally they all help extend the head, cervical region, or thorax. Unilateral contraction causes sideward flexion or lateral bending and aid in twisting

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21
Q

Origin for Trapezius

A

Superior nuchal line
Ligament Nuchae
Spines C7 - T12

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22
Q

Anterior scalene o and I

A

O: transverse processes of C3-C6

I: scalene tubercle of 1st rib

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23
Q

Middle scalene o and i

A

O: transverse process C2-C7

I: 1st rib post to subclavian artery groove

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24
Q

Posterior scalene muscles o and i

A

O: transverse process C5-C7

I: upper surface of 2nd rib

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25
Q

Function of scalene muscles

A

Elevate the ribs during heave inspiration

Laterally bend neck and head to one side

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26
Q

Pec Major O and I

A

O: costal margin, sternum, medial clavicle

I: crest of greater tubercle of humerus

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27
Q

Function of pec major

A

Flex, adduct, and medially rotate (IR) arm

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28
Q

Pec minor o and i

A

O: outer surface of ribs 3-5

I: coracoid process

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29
Q

Pec minor fxn

A

Pull scapula down and anteriorly

Elevate ribs of scapula is fixed

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30
Q

Serratus anterior o and I

A

O: upper outer surface of ribs 1-8

I: medial angle, vertebral border, inf angle of scapula

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31
Q

Serratus anterior fxn

A

Pull scapula forward

Prevents winged scapula

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32
Q

What is the principal muscles of inspiration?

A

Diaphragm

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33
Q

Diaphragm innervation

A

Phrenic nerve from C3, 4, 5

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34
Q

Pec major innervation

A

Medial and lateral pectoral nerves

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35
Q

Pec minor innervation

A

Medial pectoral nerve

36
Q

Pec Major function

A

adduct and medially rotate

37
Q

pec minor function

A

fixes scapula to thoracic wall
stretch arm forward
inspiration - lifts ribs

38
Q

Subclavis O and I

A

O: 1st rib junction
I: inferior surface of mid clavicle

39
Q

Subclavis function

A

anchors and depresses clavicle

40
Q

Serratus anterior paralysis

A

Cause: injury to long thoracic nerve
Appearance: winged scapula
Move: arm cannot abduct above the horizontal position
(can’t comb hair)

41
Q

Deltoid function

A

abduction past 15 degrees
stabilized shoulder joint
ant portion - swings arm

42
Q

Deltoid O and I

A

O: clavicle, acromion, and spine of scapula
I: Deltoid Tuberosity on humerus

43
Q

Deltoid Nerve

A

Axillary Nerve

44
Q

Teres Major Function

A

adduction and medial rotation of humerus
stabilizes the humeral head in socket
counteracts the deltoid during abduction of the arm

45
Q

Teres Major O and I

A

O: Inf angle of scapula
I: Medial lip of intertubercular groove

46
Q

Rotator cuff muscles, O and I

A

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis
O: Scapula
I: Greater and Lesser (subscap) Tubercles of Humerus

47
Q

Which rotator cuff muscles are responsible for abduction?

A

supraspinatus

along with deltoid

48
Q

Which rotator cuff muscles are responsible for adduction?

A

subscapularis

teres minor

49
Q

Which rotator cuff muscles are responsible for medial rotation (IR)?

A

subscapularis

teres major

50
Q

Which rotator cuff muscles are responsible for lateral rotation (ER)?

A

infraspinatus

teres minor

51
Q

Innervation for supraspinatus and infraspinatus

A

suprascapular nerve

52
Q

innervation for deltoid and teres minor

A

axillary

53
Q

innervation for levator scap and rhomboid

A

dorsal scapular nerve

54
Q

innervation for triceps

A

radial nerve

55
Q

which muscles does the suprascapular nerve innervate?

A

infra and supraspinatus

56
Q

which muscles does the axillary nerve innervate?

A

deltoid, teres minor

57
Q

which muscles does the dorsal scapular nerve innervate?

A

levator scap, rhomboids

58
Q

Biceps Brachii O (long and short heads) and I

A

O Long Head: coracoid process
O Short Head: through intertubercular groove to attach at supraglenoid tubercle

I: Radial tuberosity and continues as bicipital aponeurosis

59
Q

biceps fxn

A

flexes forearm

supinate when elbow is flexed

60
Q

Brachialis O and I

A

O: distal half of humerus

I: coronoid process and tuberosity of ulna

61
Q

Coracobrachialis O and I

A

O: coracoid process

I: mid 1/3 humerus

62
Q

Coracobrachialis fxn

A

Musculocutaneous n runs through
flexes and adducts arm
stabilizes GH joint
Drinking

63
Q

Triceps O and I

A

O Long Head: infraglenoid tubercle

I: olecranon of ulna

64
Q

Triceps nerve

A

radial n.

65
Q

Pronator Teres O and I and Fxn, Nerve

A

O: humeral and ulnar heads
I: lateral surface of radius
F: strong pronator (Say what?)
N: median n

66
Q

Flexor Carpi Radialis O, I, F, N

A

O: medial epi
I: 2-4 metacarpals
F: flex and abduct wrist simulatneously
N: median n

67
Q

Palmaris Longus O, I, F, N

A

O: med epi
I: Flexor retinaculum and palmar aponeurosis
F: wrist flexion (cats to stick out fingernails)
N: median n

68
Q

Flexor Carpi Ulnaris O, I, F, n

A

O: med epi
I: pisiform
F: Flexes and adducts hand
Nerve: ulnar n.

69
Q

Flexor Digitorum Superficialis O, I, F, N

A

O: med epi and radial head
I: body of mid phalanges
F: flexes PIP’s, MCP’s, and wrist
N: Median

70
Q

Flexor Digitorum Profundus O, I, F, N

A 
O: med epi and interosseous membrane
I: base of DIP's
F: Flex DIP's and up
N (Lateral, digits 2 and 3): median
N (Medial, Digits 4 and 5): ulnar
71
Q

Flexor Pollicis Longus O, I, F, N

A

O: ant radius, interos memb
I: base of dist phalanx
F: flex thumb joints
N: median

72
Q

Pronator Quadratus OIFN

A

O: dist 1/4 ant ulna
I: dist 1/4 ant radius
F: pronate
N: Median

73
Q

Brachioradialis OIFN

A

O: supracondylar ridge
I: lateral surface radius
F: flexes elbow
N: Radial

74
Q

Extensor Carpi Radialis Longus OIFN

A

O: Supraepicondylar Ridge
I: base of 2nd MCP
F: Extends and abducts wrist
N: Radial

75
Q

Extensor Carpi Radialis Brevis

A

O: lat epi
I: base 3rd MCP
F: extends and abducts
N: radial

76
Q

Extensor Digitorum OIFN

A

O: lat epi
I: extensor expansion
F: principle extensor oof medial 4 digits
N: Radial

77
Q

Extensor Digiti Minimi OIFN

A

O: Lat epi
I: extensor expansion
F: pinky extension

78
Q

Extensor Carpi Ulnaris OIFN

A

O: lat epi
I: base 5th metacarpal
F: extends and adducts wrist
N: Radial

79
Q

Supinator OIFN

A

O: lat epi and radial collateral and anular ligaments
I: lateral ant/post surface of radius
F: supinates
N: post interosseous n

80
Q

Abductor pollicis longus OIFN

A

O: post surface of ulna, radius and interos membrane
I: base of 1st metacarpal
F: abd thumb
N: post interosseous n

81
Q

Extensor Pollicis brevis OIFN

A

O: post radius, int mem
I: base of prox phalanx of thumb (snuff box)
F: ext thumb CMC
N: post interosseous n

82
Q

Extensor Pollicis Longus OIFN

A

O: post radius, int mem
I: base of dist phalanx of thumb (med snuff box)
F: extends IP, CMC, wrist; adducts and laterally rotates thumb when extended
N: post interosseous n

83
Q

Extensor Indicis OIFN

A

O: Ulna, interos mem
I: 2nd extensor expansion
F: extends 2nd PIP and DIP independently (deepest)

*located medial of extensor digitorum

84
Q

Abductor Pollicis Brevis OIFN

A

O: flexor ret, scaphoid, trapezium
I: base 1st phalanx
F: abd
N: median

85
Q

Flexor Pollicis Brevis OIFN

A 
O: flex ret, scaphoid, trapezium
I: base 1st phalanx
F: flex
N (Superficial Head): median nerve
N (Deep Head): ulnar nerve
86
Q

Lumbricals fxn and nerves

A

F: flex MCP’s and extend IP’s
N (fingers 1 and 2) - median
N (fingers 3 and 4) - ulnar

87
Q

Inerossei innervation

A

ulnar nerve

Comp Exam (5 decks)

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