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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 |