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Muscle Actions A&P
| Question | Answer |
|---|---|
| Frontalis/Occipitalis | Raise Eyebrow; Move Scalp |
| Orbicularis Oculi | Close eye |
| Orbicularis Oris | Close lip; Kissing muscle |
| Buccinator | Compress cheek; Draw corners of mouth laterally |
| Zygomaticus (Major/Minor) | Raise corner of mouth; smile |
| Masster | Close jaw; elevate mandible |
| Temporalis | close jaw; elevate mandible |
| Platysma | depress mandible; pulls lower lip back and down |
| Sternocleidomastoid | flex head; rotate head up to opposite side |
| trapezius | adduct, elevates and depresses scapula; extends head |
| Rhomboids (Major/Minor) | adduct scapula; rotates scapula inferiorly |
| Pectoralis Minor | Protract and lower scapula; raise ribs in forced inspiration |
| Serratus Anterior | Protract and rotates scapula |
| Pectoralis Major | Prime mover arm flexion; adduct and medially rotate |
| Latissimus Dorsi | Prime mover arm extention; adduct and medially rotate |
| Deltoid | Prime mover arm abduction |
| Rectus Abdominis, External Oblique, Internal Oblique | Compress abdomen; flex spine (3) |
| Transverse Abdominis | Compress abdomen |
| Biceps Brachii, Brachialis, Brachioradialis | Flex forearm (3) |
| Triceps Brachii | Extend forearm |
| Pronator Teres | Pronate forearm; hand |
| Supinator | Supinate forearm; hand |
| Rectus femoris | Extend knee; flex thigh |
| Vastus medialis, Vastus lateralis, Vastus intermedius | Extend knee (3) |
| Bicep femoris, Semitendinosus, Semimembranosus | Flex knee, extend thigh (3) |
| Tensor fasciae latae | Abduct thigh |
| Adductor longus, Adductor brevis, Adductor magnus | Adduct thigh (3) |
| Gracilis | Adduct thigh |
| Psoas major, Ilicus | Flex vertebral column; flex hip or thigh (2) |
| Gluteus maximus | Extend thigh |
| Gastrocnemius, Soleus | Plantar flexion (2) |
| Tibialis anterior | Dorsiflexion; Inversion |