Anatomy 2023 muscles table part 1

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School
Ohlone College **We aren't endorsed by this school
Course
BIO 103A
Subject
Psychology
Date
Sep 19, 2023
Pages
2
Uploaded by CaptainWalrus3575 on coursehero.com
Wednesday March 08, 2023 HEAD AND NECK ACTION ANTAGONIST*- Name the action you are using SYNERGIST *- Name the action you are using 1 Frontalis ( startled expression; Groucho Marx lifting eye brows) Lifts eyebrows; tightens scalp Occipitalis (tightens scalp) 2 Occipitalis Tightens scalp posteriorly Frontalis (tightens scalp) 3 Orbicularis oculi (orbits the eye) Closes eyes; blinking or squinting Action: closes eyes, blinking, squinting Syn: Zygomaticus frontalis (lifts eyebrows, which opens eyes) 4 Levator labii superioris (vampire showing teeth; labii means lips) Raises upper lip; opens lips orbicularis orbis (closes lips and mouth) 5 & 6 Zygomaticus major and minor (smiling muscle) Pulls corner of mouth up and laterally as in smiling Depressor anguli oris (pulls ... of mouth down laterally) zygomaticus minor for zygomaticus major & vice versa 7 Depressor labii inferioris (pouting) Pulls lower lip down to expose lower teeth Obicularis oris (closes lips, mouth, which raises lower lip) 8 Depressor anguli oris (frowning) Pulls corners of mouth down and laterally as in frowning zygomaticus (raises lateral corners of mouth upward) "smiling muscle" risorius "laughter" - draws corner of lip laterally 9 Risorius (wry expression) Moves corner of mouth laterally and posteriorly depressor labii inferioris (draws lower lip inferiorly) "pouts" Levator labii superioris?? 10 Orbicularis oris (whistling or kissing lips) Closes mouth/lips as in kissing; compresses cheeks as in whistling potential : levator labii superioris (opens lips) risorius Buccinator
11 Buccinator (buccal means cheek) Compresses cheeks as in whistling risorius Orbicularis oris 12 Masseter (masticate-chew; hand covers it when head leans on elbow) Closes jaw by elevating mandible Synergist: temporalis Antagonist: digastric? Action: Prime mover to close jaw A: Digastric - open mouth, depresses mandible S: Temporalis - closes jaw and elevates and retracts mandible?? 13 Temporalis (massage it when headache comes from clenching teeth) Closes jaw by elevating mandible Synergist : Masseter (confirmed in tutoring 03/15) Action: Closes jaw and elevates and retracts mandible A: Digastric - open mouth S: Masseter - close jaw HEAD AND NECK ACTION ANTAGONIST*- Name the action you are using SYNERGIST *- Name the action you are using 14 Mentalis (you must be "mental" to pout) Wrinkles chin 15 Scalenes (to sing scales, you need deep inspirations) Flex & rotate neck ...? trapezius Splenius? Action: elevates first two ribs for S: Sternocleidomastoid - flex and rotate neck sternoclediomastoid 16 Sternocleidomastoid (massage it when you have a stiff neck) Flexes neck forward when together; rotates it independently Synergist: Scalene group Antagonist: Trapezius Action: flexes neck forwards when together; rotates it independently A: Splenius - extends neck S: Scalenes - flex and rotate neck scalenes 17 Digastric (loud burp; indigestion) Opens jaw by depressing mandible Action: elevates hyoid bone, open mouth and depress mandible A: Masseter - elevates mandible Temporalis TRUNK (THORAX AND ABDOMEN) ACTION ANTAGONIST*- Name the action you are using SYNERGIST *- Name the action you are using 18 Pectoralis major (pop up in body builders as they flex and rotate medially) Prime mover of arm/humerus flexion ; adducts and medially rotates arm; aids forced inspiration Latissimus dorsi (extends arm) Deltoid (flexes arm)
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