What Muscles Perform The Following Actions

What Muscles Perform The Following Actions - PSIO 201...

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PSIO 201 Optional Handout Department of Physiology WHAT MUSCLES PERFORM THE FOLLOWING ACTIONS? Each tic-mark represents 1 muscle that performs the specified action/movement Raise eyebrows : frontalis Draw the scalp posteriorly: occipitalis Pucker the mouth (kissing): orbicularis oris Close the eye (winking): orbicularis oculi Pull the corners of the mouth up (smiling): zygomaticus major Normal inspiration: diaphragm Forced inspiration: external intercostals Forced expiration: internal intercostals Depression of the mandible: platysma Elevation of the mandible: temporalis masseter Retraction of the mandible: temporalis Protraction of the mandible: masseter Rotation of the head: sternocleidomastoid Flexion of the head: sternocleidomastoid Extension of the head: trapezius Flexion of the vertebral column: rectus abdominis external oblique internal oblique Extension of the vertebral column: erector spinae: iliocostalis group longissimus group spinalis group
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Compression of the abdomen: rectus abdominis
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This note was uploaded on 09/11/2011 for the course PSIO 201 taught by Professor Stanescu during the Summer '08 term at University of Arizona- Tucson.

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What Muscles Perform The Following Actions - PSIO 201...

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