Facial/Trunk Muscles Flashcards by Aaron Henley | Brainscape

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Orbicularis oculi

Facial Nerve

Closes eye

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Orbicularis oris

Facial Nerve

closes mouth

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Q

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Zygomaticus Major

Facial Nerve

smiling

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Q

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Buccinator

Facial Nerve

compress cheek

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Platysma

Facial nerve

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Sternocleidomastoid

Spinal Accessory N

Bi: neck flex

Uni: rotation opposite

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Q

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Temporalis

Trigeminal Nerve

elevate mandible

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Masseter

Trigeminal Nerve

elevate mandible

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Medial Pterygoid

Trigeminal Nerve

elevate mandible

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Lateral Pterygoid

Trigeminal Nerve

depress mandible

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Q

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External abdominal obliques

*Think hands in pocket

Bi: Trunk flexion

Uni: rot opposite

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Internal abdominal obliques

*Think “yo” muscle fibers

Bi: trunk flexion

Uni: rotation same

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Q

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Transversus abdominis

*Transverse cut fibers

compresses/supports ab wall

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Rectus abdominis

Bi: trunk flexion

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Q

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Quadratus lumborum

Bi: stabilizes trunk

Uni: lateral flexion

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Q

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Erector spinae

Bi: trunk extension

Uni: lateral flexion

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External intercostals

Intercostal N

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Internal intercostals

Intercostal N

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Innermost intercostals

Intercostal N

Q

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Diaphragm

Phrenic N

Q

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Intercostals nerves

Q

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Phrenic Nerve

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Dorsal rami (cutaneous branches)

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Palmar aponeurosis

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Flexor retinaculum

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Extensor retinaculum

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Linea Alba

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Inguinal ligament

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Achilles tendon