front 1 Platysma | back 1 tenses skin of anterior neck |
front 2 sternocleiodmastoid | back 2 head/neck flexion |
front 3 rectus abdominis | back 3 flexion/compression of abdomen |
front 4 external oblique | back 4 flexion/compression of abdomen |
front 5 transverse abdominis | back 5 compression of abdomen |
front 6 external intercostals | back 6 depresses ribs during expiration (forceful exhalation) |
front 7 Diaphragm | back 7 expands chest during breathing |
front 8 frontalis | back 8 raises eyebrows |
front 9 procerus | back 9 depresses medial eyebrow |
front 10 temporalis | back 10 elevates/closes mandible |
front 11 occipitalis | back 11 tenses skin on scalp (or retracts scalp) |
front 12 nasalis | back 12 opens nostrils |
front 13 zygomaticus major | back 13 elevates corner of mouth |
front 14 zygomaticus minor | back 14 elevation of mouth |
front 15 orbicularis oculi | back 15 closes eyelid |
front 16 orbicularis orsis | back 16 close and protrude lips (kiss) |
front 17 masseter | back 17 elevates and close mouth (chew) |
front 18 internal intercostals | back 18 depresses ribs during expiration (forceful exhalation) |
front 19 internal oblique | back 19 flexion/compresses abdomen |