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Fundamentals of Anatomy > Axial Muscles OIA > Flashcards

Axial Muscles OIA Flashcards

(81 cards)

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1
Q

Masseter Origin

A

Zygomatic Arch

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2
Q

Masseter Insertion

A

Lateral surface and angle of mandible (outside)

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3
Q

Masseter Action

A

elevates the mandible, limited protrusion

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4
Q

Temporalis Origin

A

Along temporal lines of the skull

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5
Q

Temporalis Insertion

A

Coronoid Process

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6
Q

Temporalis Action

A

Assists in elevation, Posterior fibers are the main retrusors

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7
Q

Medial Pterygoid Origin

A

Medial surface of the lateral pterygoid plate of sphenoid bone

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8
Q

Medial Pterygoid Insertion

A

medial surface of ramus of mandible (angle of mandible inside)

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9
Q

Medial Pterygoid Action

A

elevation and protrusion of mandible

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10
Q

Lateral Pterygoid Origin

A

Lateral surface of lateral pterygoid plate of sphenoid bone

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11
Q

Lateral Pterygoid Insertion

A

neck of condyle of mandible

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12
Q

Lateral Pterygoid Action

A

depresses and protrudes mandible

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13
Q

Sternocleidomastoid Origin

A

Manubrium, sternal end of clavicle

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14
Q

Sternocleidomastoid Insertion

A

Mastoid Process and lateral half of superior nuchal line

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15
Q

Sternocleidomastoid Action

A

Together: Neck FLX, EXT of only upper Cx spine, assists in inspiration
Alone: Cervical side FLX to same side and ROT to opposite side

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16
Q

Anterior Scalene Origin

A

TPs of C3-C6

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17
Q

Anterior Scalene Insertion

A

1st rib

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18
Q

Anterior Scalene Action

A

elevate first rib during inspiration and ipsilateral cervical spine FLX

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19
Q

Middle Scalene Origin

A

TPs C5-C7

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20
Q

Middle Scalene Insertion

A

superior surface of 1st rib

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21
Q

Middle Scalene Action

A

Ipsilateral cervical spine FLX, elevates first rib during forced inspiration

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22
Q

Posterior Scalene Origin

A

TPs C5-C7

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23
Q

Posterior Scalene Insertion

A

2nd rib

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24
Q

Posterior Scalene Action

A

Ipsilateral cervical spine FLX, elevates 2nd rib during forced inspiration

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25
Serratus Posterior Superior Origin
SP of C7-T3 and lig. nuchae
26
Serratus Posterior Superior Insertion
superior borders of 4 upper ribs (ribs 1-4)
27
Serratus Posterior Superior Action
elevates ribs during inspiration
28
Serratus Posterior Inferior Origin
SPs T11-L2
29
Serratus Posterior Inferior Insertion
inferior border of lower 4 ribs near angles (ribs 8-11)
30
Serratus Posterior Inferior Action
depresses ribs during expiration
31
Splenius Capitis Origin
SPs C7-T6 and nuchal lig.
32
Splenius Capitis Insertion
Mastoid Process, lateral 1/3 of superior nuchal line
33
Splenius Capitis Action
Unilaterally: ipsilateral side FLX, ipsilateral ROT Bilaterally: EXT of neck
34
Splenius Cervicis Origin
SPs C7-T6 and nuchal lig.
35
Splenius Cervicis Insertion
TPs of C1-C4
36
Splenius Cervicis Action
Unilaterally: Ipsilateral side FLX, ipsilateral ROT Bilaterally: EXT of neck
37
Spinalis Origin
broad tendon from the posterior iliac crest, posterior sacrum, sacral and lower lumbar SPs, supraspinous ligament
38
Spinalis Insertion
fibers of this muscle run superiorly to upper thoracic SPs and to cranium
39
Longissimus Origin
broad tendon from the posterior iliac crest, posterior sacrum, sacral and lower lumbar SPs, supraspinous ligament
40
Longissimus Insertion
fibers run superiorly to ribs between the angles of ribs and costal tubercles (TPs), reaches mastoid process of temporal bone
41
Iliocostalis Origin
broad tendon from the posterior iliac crest, posterior sacrum, sacral and lower lumbar SPs, supraspinous ligament
42
Iliocostalis Insertion
angles of ribs, TPs of cervical spine
43
Erector Spinae Action
Bilaterally: EXT of vertebral column and head (main extensor of the spine) Unilaterally: side FLX (ipsilateral)
44
Semispinalis Origin
TPs of T12-C4 vertebrae
45
Semispinalis Insertion
SPs of thoracic and cervical spine spanning 4-6 segments)
46
Semispinalis Action
Bilaterally: extend the thoracic and cervical spine Unilaterally: contralateral rotation of vertebral column
47
Multifidus Origin
arises from posterior sacrum, PSIS, mamillary processes of Lumbar Vertebrae, upper thoracic TPs (T1-T3)
48
Multifidus Insertion
SPs of 3rd or 4th more superior vertebrae (2-4 segments). Extends from TPs of S4 to C2
49
Multifidus Action
extension, stabilize the vertebral column
50
Rotatores Origin
TPs
51
Rotatores Insertion
SPs of 1 segment (brevis) or 2 segments (longus)
52
Rotatores Action
extends vertebral column, stabilizes vertebrae
53
Oblique Capitis Inferior Origin
SP of C2
54
Oblique Capitis Inferior Insertion
TP of C1
55
Oblique Capitis Inferior Action
ipsilateral ROT
56
Oblique Capitis Superior Origin
TP of C1
57
Oblique Capitis Superior Insertion
between superior and inferior nuchal lines on the occiput
58
Oblique Capitis Superior Action
Ipsilateral Side FLX and ext
59
Rectus Capitis Posterior Major Origin
SP of C2
60
Rectus Capitis Posterior Major Insertion
Inferior nuchal line (lateral aspect)
61
Rectus Capitis Posterior Major Action
Cx EXT
62
Rectus Capitis Posterior Minor Origin
Posterior tubercle of C1
63
Rectus Capitis Posterior Minor Insertion
inferior nuchal line (medial aspect)
64
Rectus Capitis Posterior Minor Action
Cx EXT
65
Diaphragm Origin
Xiphoid Process, ribs 7-12 and cartilages, anterior bodies of upper lumbar spine 3 parts: sternal (2 slips attaching to xiphoid process), costal (inferior 6 costal cartilages), lumbar (arises from medial and lateral arcuate ligs. and 3 superior lumbar vertebrae.
66
Diaphragm Insertion
central tendon
67
Rectus Abdominis Origin
Pubis symphysis and the pubic crest
68
Rectus Abdominis Insertion
Inferior cartilages Ribs 5-7 (3 ribs) and xiphoid process
69
Rectus Abdominis Action
FLX of the trunk, depresses ribs, compresses abdomen, controls tilt of pelvis
70
External Oblique Origin
Ribs 5-12 (inferior 8 ribs)
71
External Oblique Insertion
linea alba, iliac crest, pubic tubercle
72
External Oblique Action
Together: Trunk FLX Alone: ipsilateral side flexion, contralateral rotation
73
Internal Oblique Origin
thoracolumbar fascia, iliac crest, and inguinal ligament
74
Internal Oblique Insertion
inferior surfaces of ribs 9-12, linea alba, pubis
75
Internal Oblique Action
ipsilateral side FLX and ipsilateral ROT
76
Transverse Abdominus Origin
cartilages of ribs 7-12, iliac crest, thoraco-lumbar fascia
77
Transverse Abdominus Insertion
pubic crest and linea alba
78
Transverse Abdominus Action
compresses abdomen and supports viscera
79
Quadratus Lumborum Origin
iliac crest and iliolumbar ligament
80
Quadratus Lumborum Insertion
12th rib and tips of TPs of lumbar spine
81
Quadratus Lumborum Action
Together: Lumbar EXT Alone: side FLX

Fundamentals of Anatomy (17 decks)

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