Axial muscles Flashcards

0
Q

Masseter

A

zygomatic arch and maxilla
mandibular ramus and angle
closes jaw, elevates mandible

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1
Q

Temporalis

A

temporal fossa
coronoid process of the mandible
closes jaw

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2
Q

epicranlus (occipitalis)

A

occipital bone, mastoid process of the temporal bone
galea aponeurotica (scalp)
pulls scalp backwards

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3
Q

epicranlus (frontals)

A
galea aponeurotica (scalp) 
skin of eyebrows, root of nose
raises eybrows
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4
Q

orbicularis ocull

A

frontal and maxillary bones/ligaments around orbit
encircles orbit/tissue in in eyelid
closes eyes, blinking, squinted

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5
Q

orbicularis oris

A

lip muscles
encircles mouth, inserts into muscle/skin around mouth
closes mouth, kissing, speech

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6
Q

zygomaticus

A

zygomatic bone
skin/muscle corner of the mouth
smiling

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7
Q

platysma

A

fascia of chest and deltoid
lower part of mandible
depresses mandible

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8
Q

sternocleidomastoid

A

sternum(manubrium) & clavicle (medial)
temporal bone (mastoid process) & occipital bone
neck flexion forward, rotate head toward shouder

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9
Q

sternohyoid

A

manbrium-medial end of clavicle
lower margin of hyoid bone
depresses larynx

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10
Q

latissimus dorsl

A

indirect- last 6 thoracic vertebrae, rib, and iliac crest
humerus(intertubercular suulcus)
arm extention, adducts, medically rotates arm, brings arm down

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11
Q

pectoralis major

A

clavicle, sternum, rib cartilage, aponeurosis of external oblique
converge by short tendon to humerous
arm flexion, adducts/radially rotates arm, pulls chest upward

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12
Q

pectoralis minor

A

rib 3-5
coracoid process of scapula
draws scapula forward/rib cage up

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13
Q

serratus anterior

A

ribs (lateral)
scapula (anterior.vertebral)
scapula forward, rotates scapula, abduction of arm

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14
Q

external intercostals

A

inferior borders of rib
superior borders of ribs
inspiration

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15
Q

internal intercostals

A

superior borders of ribs
inferior borders of the ribs
expiration

16
Q

diaphragm

A

interior margin of sternum,lower 6 ribs&costal cartilage, lumbar vertebrae (1-3)
central tendon
forms floor of thoracic cavity, flattens during contraction, inspiration

17
Q

erractor spinae (sacrosspinalis)

A

sacrum, iliac crest, tranverse and spinous processes of vertebrae, ribs
ribs, transverse processes of vertebrae, occipital bone, mastoid process
bends vertebral column backwards and sideways, maintains curvature of spine, stabilization during walking

18
Q

rectus sbdominus

A

public crest and symphysis
xiphoid process, costal cartilage of ribs 5-7
flexes/rotates vertebral column, abdominal pressure, stabilizes pelvis

19
Q

external oblique

A
last 8 ribs (anterior)
linea alba (tendon sheath), public crest/tubercles, iliac crest
see R. abdominus, aids in trunk rotation, lateral flexion
20
Q

internal oblique

A
lumbar fascia, iliac crest
linea alba (tendon sheath), pubic crest, cartilage of the last 3 ribs
 see R. abdominus, aids in trunk rotation, lateral flexion