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

Q

suprahyoid muscles origin

A

mastoid and styloid process, hyoid

Q

suprahyoid muscles insertion

A

mandible

Q

suprahyoid muscles action

A

elevate hyoid, depress mandible

Q

erector spinae muscles

A

spinalis, longissimus, iliocostalis

Q

erector spinae origin

A

spinous process, sacrum, ilium

Q

erector spinae insertion

A

vertebrae, ribs

Q

erector spinae action

A

extend spine

Q

rectus abdominis origin

A

pubic bone

Q

rectus abdominis insertion

A

xiphoid process (sternum) and inferior ribs

Q

rectus abdominis action

A

flex trunk, compress abdomen

Q

rectus abdominis components

A

linea alba, rectus sheath

Q

external oblique origin

A

inferior rib

Q

external oblique insertion

A

linea alba

Q

external oblique action

A

flex and rotate trunk, compress abdomen

Q

internal oblique origin

A

iliac crest

Q

internal oblique insertion

A

linea alba

Q

internal oblique action

A

flex and rotate trunk, compress abdomen

Q

transverse abdominis origin

A

inferior ribs, iliac crest

Q

transverse abdominis insertion

A

linea alba

Q

transverse abdominis action

A

rotate trunk, compress abdomen

Q

quadratus lumborum origin

A

iliac crest

Q

quadratus lumborum insertion

A

inferior ribs

Q

quadratus lumborum action

A

extend vertebral column, elevate hips

Q

respiratory diaphragm origin

A

internal ribs, xiphoid process, lumbar vertebrae

Q

respiratory diaphragm insertion

A

central tendon

Q

respiratory diaphragm action

A

flattening for breathing

Q

intercostals origin

A

ribs

Q

intercostals insertion

A

adjacent ribs

Q

intercostals action

A

respiration