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Muscles Flashcards

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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
Function of scalene muscles
Elevate the ribs during heave inspiration | Laterally bend neck and head to one side
26
Pec Major O and I
O: costal margin, sternum, medial clavicle I: crest of greater tubercle of humerus
27
Function of pec major
Flex, adduct, and medially rotate (IR) arm
28
Pec minor o and i
O: outer surface of ribs 3-5 I: coracoid process
29
Pec minor fxn
Pull scapula down and anteriorly | Elevate ribs of scapula is fixed
30
Serratus anterior o and I
O: upper outer surface of ribs 1-8 I: medial angle, vertebral border, inf angle of scapula
31
Serratus anterior fxn
Pull scapula forward | Prevents winged scapula
32
What is the principal muscles of inspiration?
Diaphragm
33
Diaphragm innervation
Phrenic nerve from C3, 4, 5
34
Pec major innervation
Medial and lateral pectoral nerves
35
Pec minor innervation
Medial pectoral nerve
36
Pec Major function
adduct and medially rotate
37
pec minor function
fixes scapula to thoracic wall stretch arm forward inspiration - lifts ribs
38
Subclavis O and I
O: 1st rib junction I: inferior surface of mid clavicle
39
Subclavis function
anchors and depresses clavicle
40
Serratus anterior paralysis
Cause: injury to long thoracic nerve Appearance: winged scapula Move: arm cannot abduct above the horizontal position (can't comb hair)
41
Deltoid function
abduction past 15 degrees stabilized shoulder joint ant portion - swings arm
42
Deltoid O and I
O: clavicle, acromion, and spine of scapula I: Deltoid Tuberosity on humerus
43
Deltoid Nerve
Axillary Nerve
44
Teres Major Function
adduction and medial rotation of humerus stabilizes the humeral head in socket counteracts the deltoid during abduction of the arm
45
Teres Major O and I
O: Inf angle of scapula I: Medial lip of intertubercular groove
46
Rotator cuff muscles, O and I
Supraspinatus, Infraspinatus, Teres Minor, Subscapularis O: Scapula I: Greater and Lesser (subscap) Tubercles of Humerus
47
Which rotator cuff muscles are responsible for abduction?
supraspinatus | along with deltoid
48
Which rotator cuff muscles are responsible for adduction?
subscapularis | teres minor
49
Which rotator cuff muscles are responsible for medial rotation (IR)?
subscapularis | teres major
50
Which rotator cuff muscles are responsible for lateral rotation (ER)?
infraspinatus | teres minor
51
Innervation for supraspinatus and infraspinatus
suprascapular nerve
52
innervation for deltoid and teres minor
axillary
53
innervation for levator scap and rhomboid
dorsal scapular nerve
54
innervation for triceps
radial nerve
55
which muscles does the suprascapular nerve innervate?
infra and supraspinatus
56
which muscles does the axillary nerve innervate?
deltoid, teres minor
57
which muscles does the dorsal scapular nerve innervate?
levator scap, rhomboids
58
Biceps Brachii O (long and short heads) and I
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
biceps fxn
flexes forearm | supinate when elbow is flexed
60
Brachialis O and I
O: distal half of humerus I: coronoid process and tuberosity of ulna
61
Coracobrachialis O and I
O: coracoid process I: mid 1/3 humerus
62
Coracobrachialis fxn
Musculocutaneous n runs through flexes and adducts arm stabilizes GH joint Drinking
63
Triceps O and I
O Long Head: infraglenoid tubercle I: olecranon of ulna
64
Triceps nerve
radial n.
65
Pronator Teres O and I and Fxn, Nerve
O: humeral and ulnar heads I: lateral surface of radius F: strong pronator (Say what?) N: median n
66
Flexor Carpi Radialis O, I, F, N
O: medial epi I: 2-4 metacarpals F: flex and abduct wrist simulatneously N: median n
67
Palmaris Longus O, I, F, N
O: med epi I: Flexor retinaculum and palmar aponeurosis F: wrist flexion (cats to stick out fingernails) N: median n
68
Flexor Carpi Ulnaris O, I, F, n
O: med epi I: pisiform F: Flexes and adducts hand Nerve: ulnar n.
69
Flexor Digitorum Superficialis O, I, F, N
O: med epi and radial head I: body of mid phalanges F: flexes PIP's, MCP's, and wrist N: Median
70
Flexor Digitorum Profundus O, I, F, N
``` 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
Flexor Pollicis Longus O, I, F, N
O: ant radius, interos memb I: base of dist phalanx F: flex thumb joints N: median
72
Pronator Quadratus OIFN
O: dist 1/4 ant ulna I: dist 1/4 ant radius F: pronate N: Median
73
Brachioradialis OIFN
O: supracondylar ridge I: lateral surface radius F: flexes elbow N: Radial
74
Extensor Carpi Radialis Longus OIFN
O: Supraepicondylar Ridge I: base of 2nd MCP F: Extends and abducts wrist N: Radial
75
Extensor Carpi Radialis Brevis
O: lat epi I: base 3rd MCP F: extends and abducts N: radial
76
Extensor Digitorum OIFN
O: lat epi I: extensor expansion F: principle extensor oof medial 4 digits N: Radial
77
Extensor Digiti Minimi OIFN
O: Lat epi I: extensor expansion F: pinky extension
78
Extensor Carpi Ulnaris OIFN
O: lat epi I: base 5th metacarpal F: extends and adducts wrist N: Radial
79
Supinator OIFN
O: lat epi and radial collateral and anular ligaments I: lateral ant/post surface of radius F: supinates N: post interosseous n
80
Abductor pollicis longus OIFN
O: post surface of ulna, radius and interos membrane I: base of 1st metacarpal F: abd thumb N: post interosseous n
81
Extensor Pollicis brevis OIFN
O: post radius, int mem I: base of prox phalanx of thumb (snuff box) F: ext thumb CMC N: post interosseous n
82
Extensor Pollicis Longus OIFN
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
Extensor Indicis OIFN
O: Ulna, interos mem I: 2nd extensor expansion F: extends 2nd PIP and DIP independently (deepest) *located medial of extensor digitorum
84
Abductor Pollicis Brevis OIFN
O: flexor ret, scaphoid, trapezium I: base 1st phalanx F: abd N: median
85
Flexor Pollicis Brevis OIFN
``` O: flex ret, scaphoid, trapezium I: base 1st phalanx F: flex N (Superficial Head): median nerve N (Deep Head): ulnar nerve ```
86
Lumbricals fxn and nerves
F: flex MCP's and extend IP's N (fingers 1 and 2) - median N (fingers 3 and 4) - ulnar
87
Inerossei innervation
ulnar nerve

Comp Exam (5 decks)

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