Muscle Actions Axial Skeleton Flashcards by Michael Yoshinaga

Q

Rectus Abdominis

A

Flexion

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Q

External Oblique

A

Flexion
Ipsilateral Lateral Flexion
Contralateral Rotation

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Q

Internal Oblique

A

Flexion
Ipsilateral Lateral Flexion
Ipsilateral Rotation

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Q

Transverse Abdominis

A

Support Abdominal Wall

Compress Abdomen

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Q

Serratus Posterior: Superior

A

Elevates Ribs

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Q

Serratus Posterior: Inferior

A

Depresses Ribs

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Q

Splenius Capitis

A

Extend
Ipsilateral Lateral Flexion
Ipsilateral Rotation

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Q

Splenius Cervicis

A

Extend
Ipsilateral Lateral Flexion
Ipsilateral Rotation

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Q

Iliocostalis: Lumborum, Thosracis, Cervicis

A

Extend
Ipsilateral Lateral Flexion
Ipsilateral Rotation

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Q

Longissimus: Thoracis, Cervicis, Capitis

A

Extend
Ipsilateral Lateral Flexion
Ipsilateral Rotation

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Q

Spinalis Thoracis, Cervicis

A

Extend
Ipsilateral Lateral Flexion
Ipsilateral Rotation

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Q

Semispinalis: Thosacis, Cervicis, Capitis

A

Extend
Ipsilateral Lateral Flexion
Contralateral Rotation

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Q

Multifidus

A

Extend
Ipsilateral Lateral Flexion
Contralateral Rotation

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Q

Rotatores

A

Extend
Ipsilateral Lateral Flexion
Contralateral Rotation

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Q

Interspinalis

A

Extend

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Q

Intertransversarii

A

Ipsilateral Lateral Flexion

Q

Quadratus Lumborum

A

Extend

Ipsilateral Lateral Flexion

Q

Rectus Capitis Posterior Major

A

Extend

Ipsilateral Rotation

Q

Rectus Capitis Posterior Minor

A

Extend

Ipsilateral Rotation

Q

Obliquus Capitis Superior

A

Extend

Ipsilateral Lateral Flexion

Q

Obliquus Capitis Inferior

A

Ipsilateral Rotation

Q

Sternocleidomastoid

A

Extend Occiput & Upper Cervical
Flex Lower Cervical
Ipsilateral Lateral Flexion
Contralateral Rotation

Q

Platysma

A

Flex

Tightens skin of neck

Q

Scalenus Posterior

A

Ipsilateral Lateral Flexion

Contralateral Rotation

Scalenus Medius

Ipsilateral Lateral Flexion | Contralateral Rotation

Scalenus Anterior

Flex Ipsilateral Lateral Flexion Contralateral Rotation

Sternohyoid

Depress Hyoid

Sternothyroid

Depress Hyoid & Larynx

Thyrohyoid

Depress Hyoid | Elevate Larynx

Omohyoid

Depress & Retract Hyoid

Frontalis

Raise Eyebrows

Orbicularis Oculi

Close Eyelids

Orbicularis Oris

Close Lips

Buccinator

Compress Cheeck

Sygomaticus

Pull angle of lips superiorly-smile

Temporalis

Elevate Mandible | Retrude Mandible

Masseter

Elevate Mandible | Protrude Mandible

Medial Pterygoid

Elevate Mandible | Protrude Mandible

Lateral Pterygoid

Depress Mandible | Protrude Mandible