Axial Skeleton Muscles Flashcards by Hailey Clausen

Q

orbicularis oculi origin

A

margin of orbit

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Q

orbicularis oculi insertion

A

skin around eye lids

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Q

orbicularis oculi action

A

close eyes

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Q

orbicularis oris origin

A

maxilla and mandible

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Q

orbicularis oris insertion

A

skin around mouth

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Q

orbicularis oris action

A

purse lips

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Q

buccinator origin

A

maxilla and mandible

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Q

buccinator insertion

A

orbicularis oris

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Q

buccinator action

A

compress cheeks, hold food between teeth

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Q

platysma origin

A

skin of shoulder and chest

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Q

platysma insertion

A

skin of cheek and mandible

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Q

platysma action

A

tense skin of neck

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Q

masseter origin

A

zygomatic arch

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Q

masseter insertion

A

mandibular ramus

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Q

masseter action

A

elevate and protract mandible

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Q

temporalis origin

A

lateral side of neurocranium

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Q

temporalis insertion

A

coronoid process of mandible

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Q

temporalis action

A

elevate and retract mandible

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Q

sternocleidomastoid origin

A

manubrium (sternum) and clavicle

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Q

sternocleidomastoid insertion

A

mastoid process (temporal bone)

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Q

sternocleidomastoid action

A

ipsilaterally: bends neck contralaterally: rotate head bilaterally: flex neck

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Q

infrahyoid muscles origin

A

sternum, scapula

Q

infrahyoid muscles instertion

A

hyoid

Q

infrahyoid muscles action

A

depress hyoid

suprahyoid muscles origin

mastoid and styloid process, hyoid

suprahyoid muscles insertion

mandible

suprahyoid muscles action

elevate hyoid, depress mandible

erector spinae muscles

spinalis, longissimus, iliocostalis

erector spinae origin

spinous process, sacrum, ilium

erector spinae insertion

vertebrae, ribs

erector spinae action

extend spine

rectus abdominis origin

pubic bone

rectus abdominis insertion

xiphoid process (sternum) and inferior ribs

rectus abdominis action

flex trunk, compress abdomen

rectus abdominis components

linea alba, rectus sheath

external oblique origin

inferior rib

external oblique insertion

linea alba

external oblique action

flex and rotate trunk, compress abdomen

internal oblique origin

iliac crest

internal oblique insertion

linea alba

internal oblique action

flex and rotate trunk, compress abdomen

transverse abdominis origin

inferior ribs, iliac crest

transverse abdominis insertion

linea alba

transverse abdominis action

rotate trunk, compress abdomen

quadratus lumborum origin

iliac crest

quadratus lumborum insertion

inferior ribs

quadratus lumborum action

extend vertebral column, elevate hips

respiratory diaphragm origin

internal ribs, xiphoid process, lumbar vertebrae

respiratory diaphragm insertion

central tendon

respiratory diaphragm action

flattening for breathing

intercostals origin

ribs

intercostals insertion

adjacent ribs

intercostals action

respiration