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ANAT315 > Muscles functions/origins/insertions/innervations > Flashcards

Muscles functions/origins/insertions/innervations Flashcards

1
Q

what is the main function of the ILS muscles?

A

extension of the spine

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2
Q

what is the innervation of serratus posterior inferior?

A

anterior rami of intercostal nerve T9-T12

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3
Q

anconceus

A

o: lateral epicondyle of humerus
i: olecranon of ulna

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4
Q

brachialis

A

o: Anterior shaft of the humerus
i: Ulnar tuberosity

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5
Q

subscapularis

A

o: subscapular fossa
i: lesser tubercle of the humerus

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6
Q

what is the main fct of the biceps brachii?

A

supination

flexion of the elbow joint

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7
Q

what innervated the sternocleidomastoid?

A

spinal accessory nerve

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8
Q

rectus abdominus OI

A

O: Public crest/superior public ramus
i: Costal cartilage of ribs V-VII
Xiphoid process

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9
Q

infraspinatus

A

o: Infraspinous fossa of the scapula
i: middle facet of greater tubercle

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10
Q

external oblique

A

o: Ribs V-XII
i: linea alba, anterior hip bone

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11
Q

Longus Colli
O
I
FCT

A

o: vertebral bodies
i: TPs of the cervical vertebrae
fct: flexion of the cervical spine

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12
Q

sternocleidomastoid

OI?

A

o: manubrium and sternum, medial clavicle
i: mastoid process of the skull

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13
Q

Longus Capitis
O
I
FCT

A

O: TP oc cervical vertebrae
I occipital bone
FCT: flexion of the head

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14
Q

what is the OI of Serratus posterior inferior?

A

o: Thoracolumbar fascia
SPs of TXI-LII
i: ribs 9-12

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15
Q

Levator scapulae

OI

A

o: TPs of CI-CIV
I: Superiomedial boarder of the scapula

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16
Q

fct of pectoalis major about the GH?

A

GH flexion, adduction and medial rotation

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17
Q

function of latissimus dorsi about the GH joint?

A

extension, adduction and medial rotation

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18
Q

deltoid

A

O: Horseshoe (clavicle, acromion, spine of scapula)
I: deltoid tuberosity of the humerus

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19
Q

External intercostal muscle

OI

A

o: inferior surface of rib
i: superior surface of rib below

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20
Q

OI pectoralis major

A

o: clavicular and sternal heads
i: lateral lip of the intertibercular goove to the humerus

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21
Q

Rectus capitis major

OI and function

A

o: SP of C2
i: occuipital bone
fct: Extension & ipsilateral rotation of head

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22
Q

obliquus capitis inferior

OI and fct?

A

o: SP C2
i: TP C1
fct: ipsilateral rotation of the neck

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23
Q

Scalenes
O
I
FCT

A

o: TP of cervical vertebrae
i: rib 1 (anterior or middle)
rib 2 (posterior)

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24
Q

Flexor Pollicis Longus

A

o: Radius, Interosseous membrane
i: Base of 1st distal Phalanx (thumb)
fct: Flexion of the wrist, MCP, PIP & DIP of the thumb

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25
Q

what extrinsic muscle of the back is responsible for the depression of the ribs?

A

Serratus posterior inferior

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26
Q

obliquus capitis superior

OI and fct?

A

o: TP of atlas
I: occipital bone
fct: Extension & ipsilateral lateral flexion of the head

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27
Q

transversus thoracis

OI?

A

o: sternum and xiphoid process
i: inner surface of costal cartilage of ribs 2-6

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28
Q

psoas major

A

o: T12
i: L5

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29
Q

what are the muscles of the intrinsic back divided?

A

into 3 groups
ILS muscles
transversospinal muscles
minor deep muscles

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30
Q

internal oblique

A

o: Thoracolumbar fascia
Anterior hip bone
i: Ribs X-XII
Linea Alba

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31
Q

what movement is accomplished by sternocleidomastoid?

A

Bilateral extension of the head at the atlanto-occipital joint & flexion of the cervical spine
Unilateral: contralateral rotation, ipsilateral lateral flexion

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32
Q

Flexor Digitorum Profundus (FDP

A

o: Ulna, Interosseous membrane
i: 4 tendons to the base of distal Phalanx of digits II-V fct: Flexion of the wrist, MCP, PIP, DIP

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33
Q

movement accomplished by the deltoid at the GH joint?

A

GH flexion/extension, abduction and lateral rotation

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34
Q

what are the anterior muscles of the neck?

A 
Rectus capitis lateralis
Rectus capitis anterior
Longus Capitis
longus colli
scalenes
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35
Q

transversis abdominis

A 
o: Ribs VII-XII
Thoracolumbar fascia
Anterior hip bone
 i: Linea Alba,
Public tubercle
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36
Q

flexor digitorum superficialis

OI/FCT

A

o: Medial epicondyle , head and proximal 1/3 of radius
i: 4 tendons that split on sides of middle phalanx of digits II-V
fct: Flexion of the wrist, MCP, PIP

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37
Q

what extrinsic muscle of the back is responsible for the elevation of the ribs?

A

Serratus posterior superior

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38
Q

innervation of latissimus dorsi?

A

thoracodorsal nerve

C6-C8

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39
Q

what is the innervation of serratus posterior superior?

A

anterior rami of intercostal nerve T1-T4

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40
Q

what anterior muscles act on the scapulothoracic joint?

A

pectoralis minor
subclavius
serratus anterior

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41
Q

splenius cervicis OI?

A

o: SPs of TIII-TVI
i: TPs of CI-CIV

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42
Q

flexor carpi radialis

i and fct?

A

i: metacrpals 2-3
fct: flexion and R.D. of the hand at the wrist

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43
Q

flexor carpi ulnaris

i and fct?

A

i: pisiform, hammate and Metacarpal 5
fct: flexion and U.D of the hand at wrist

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44
Q

what is the OI of Serratus posterior superior?

A

o: Ligamentum of nuchae
SPs of CVII-TIII
i: ribs 1-4

45
Q

fct of coracobrachialis?

A

flexion of arm at GH

46
Q

movement done by subscapularis about GH joint?

A

medial rotation

47
Q

functions of the trapezius about the scapula?

A
  • Upper fibers: elevation of the scapula
  • Middle fibers: retraction of the scapula & upward rotation of the scapula during abduction of the arm
  • Lower fibers: depression of the scapula & upward rotation of the scapula during abduction of the arm
48
Q

Rectus capitis minor

OI and function

A

o: posterior tubercle of atlas
i: occipital bone
fct: Suboccipital nerve (posterior ramus of C1)

49
Q

what is the innervation of scalenes?

A

anterior rami C3-C8

50
Q

what are the muscles of the superficial layer of the fore arm?

A

pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris

51
Q

teres major

A

o: Lateral inferior border of the scapula
i: Medial lip of intertubercular groove

52
Q

what is the particularity about the Transversospinal muscles of the back?

A

they all originate on a TP and insert on a SP

53
Q

innervation of trapezius

A

spinal accessory nerve

54
Q

what innervates the splenius capitis

A

Posterior rami of spinal nerves C3-C4

55
Q

intertransversari fct?

A

ipsilateral rotation of the vertebral column

56
Q

what is the primary function of the transversospinal muscles?

A

contralateral rotation of the spine

57
Q

function of the splenius muscles?

A

Bilateral: extension of the head

Unilateral: Ipsilateral rotation of the head and lateral flexion

58
Q

what are the posterior muscles that act on GH joint?

A 
teres minor
deltoid
supraspinatus
infraspinatus
teres major
59
Q

pronator quadratus (deeo)

A

o: Anterior Distal Ulna
i: Anterior Distal radius
fctL pronation

60
Q

Rectus capitis anterior
O
I
FCT

A

O TP of C2
I midline of occipital bone
FCT: lateral flexion of the head, stabilizes the head

61
Q

function of levator scapulae about Scapula?

A

elevation of the scapula and downwards rotation

62
Q

intertransversari

OI?

A

o: TP of cervical and lumbar
i: TP of vertebrae above

63
Q

what is the innervation of the posterior intrinsic muscles?

A

Posterior rami of the cervical spinal nerve

64
Q

triceps brachii

A

o: Long head Infraglenoid tubercle of the scapula
Lateral head Posterior humerus
Medial head Posterior humerus
i: olecranon of ulna

65
Q

what movement is accomplished by pec minor?

A

depression of scapula

slight protraction

66
Q

pronator teres

i and fct?

A

insertion: Proximal radius
fct: pronation forearm

67
Q

what are the 3 transversospinal muscles and give their respective IO?

A

semispinalis: from the TP of the cervical and traverse vertebrae to the SP 4-6 vertebrae levels above
multifidis: TP of thoracolumbar region and inserts on the S2 2-4 levels above
rotatores: TP of the thoracic region with SP 1-2 Vertebrae levels above

68
Q

movement accomplished by teres minor

A

Lateral rotation of the arm at GH joint

69
Q

splenius capitis

OI?

A

o: Ligamentum Nuchae
SPs of CVII-TIII

i: mastoid process

70
Q

movement accomplished by infraspinatus

A

Lateral rotation of the arm at GH joint

71
Q

quadratus lumborum

A

o: Ribs XII
TP of lumbar vertebrae
i: illiac crest

72
Q

supinator

A

i: Lateral epicondyle of the humerus
o: Proximal radius fct: Supination

73
Q

Trapezius

OI

A

o: SP of CVII-TXII
Skull
Ligamentof nuchae
i: Horseshoe

74
Q

brachioradialis

A

o: Lateral supracondylar ridge of the humerus
i: Styloid process of the radius

75
Q

what are the extrinsic muscles of the back?

A

superficial: latissimus dorsi and trapezius
2nd layer: rhomboids and levator scapulae
3rd: serratus posterior inferior and superior

76
Q

palmaris longus

i and fct?

A

i: palmar aponeurosis
fct: limited flexion of the wrist

77
Q

interspinalis

OI?

A

o: SP of one vertebrae
i: SP of vertebrae above

78
Q

movement accomplished by teres major

A

Extension, adduction and medial rotation of GH joint

79
Q

serratus anterior?

A

o: lat. border of ribs 1-8
i: anteromedial border of the scapula

80
Q

coracobrachialis

A

o: coracoid process
i: anterior shaft of humerus

81
Q

interspinalis function?

A

extension of the spine

82
Q

what is the common origin of the superficial muscles of the anterior forearm?

A

medial epicondyle of the humerus

83
Q

teres minor

A

o: lateral inferior border of scapula
i: inferior facet of the greater tubercle

84
Q

levatores costarum

OI?

A

O: TPs CVII-TXI
i: Upper border of rib below

85
Q

what movement is accomplished by subclavius?

A

depression of the clavicle

86
Q

Rectus capitis lateralis
O
I
FCT

A

O: TP of Atlas
I: occipital bone
FCT: Lateral flexion of the head
Stabilizes head

87
Q

what are the ILS muscles?

A

illiocostalis
longissimus
spinalis

88
Q

what is the common fct of the posterior muscles of the arm?

A

extension at the elbow joint

89
Q

what are the posterior muscles of the abdominal walls?

A

quadratus lumborum
psoas minor
psoas major
illiacus

90
Q

levatores costarum FUNCTION?

A 
Rib elevation (primary)
Ipsilateral, lateral flexion of vertebral column, slightly (secondary)
91
Q

movement accomplished by supraspinatus

A

Initiation of arm abduction at the GH joint (~ 30 degrees)

92
Q

what are the superficial muscles of the neck?

A

splenius capitis
splenius cervicis
sternocleidomastoid

93
Q

Latissimus dorsi

OI

A

O: Thoraco lumbar fascia
Thoracic and lumbar vertebrae
sacrum
Iliac crest

I: Intertubercular groove of the humerus

94
Q

fct of the serratus anterior?

A

depression of the scapula, scapular winging

95
Q

pectoralis minor

A

o: Ribs 3-5
I: coracoid process of scapula

96
Q

What anterior muscles act on GH joint?

A

Pectoralis major
deltoid
subscapularis

97
Q

What are the anterior muscles of the abdominal wall?

A 
rectus abdominus
external oblique
internal oblique
transversis abdominis
diaphragm
98
Q

Internal intercostal/ innermost intercostal

OI?

A

o: superior surface of the inferior rib
i: inferior surface of rib of the rib above

99
Q

subclavius

A

o: 1st Rib & costal cartilage
i: inferior surface of clavicle

100
Q

psoas minor

A

o: t12-l1
i: public bone

101
Q

what muscles compose the anterior compartment of the arm?

A

bicep brachii
coracobrachialis
brachialais

102
Q

what movement can be accomplished by external oblique, internal oblique?

A

external: contralateral rotation of the trunk
internal: ipsilateral rotation of the trunk

103
Q

biceps brachii

A

o: Long head: supraglenoid tubercle of the scapula
Short head: coracoid process of the scapula
i: Radial tuberosity and bicpital aponeusosis

104
Q

what muscle is innervated by the dorsal scapular nerve?

A

Levator scapulae

C4-C6

105
Q

what innervates the posterior sub occipital muscles of the skull?

A

Suboccipital nerve (posterior ramus of C1)

106
Q

supraspinatus

A

o: Supraspinous fossa of the scapula
i: Superior facet of the greater tubercle

107
Q

what muscles compose the minor deep group?

A

interspinalis
intertransversari
levator costarum

108
Q

what movement can be done by brachialis?

A

flexion of the forearm at elbow joint

109
Q

what are the posterior sub occipital muscles of the skulll?

A

rectus capitis posterior minor/major

obliquus capitis inferior./superior

ANAT315 (12 decks)

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