Lab practical 3 Flashcards
Muscle actions
Orbicularis occuli
Closes eye, lowers eyebrows
Orbicularis oris
Closes lips
Buccinator
Compress cheeks
Frontalis
Raise eyebrows
Masseter
Elevates mandible
Temporalis
Elevates mandible
Sternocleidomastoid
Flexes neck and cocks head
Deltoid
Flexion and rotation of humerus
Pectoralis major
Flexion, adduction and rotation of humerus
Latissimus dorsi
Extension, adduction and rotation of humerus
Subscapularis
Medially rotates humerus and stabilizes shoulder
Supraspinatus
Abducts arm and stabilizes shoulder
Infraspinatus
Laterally rotates humerus and stabilizes shoulder
Teres minor
Laterally rotates humerus and stabilizes shoulder
Brachialis
Flexes elbow
Biceps brachii
Flexes elbow and supinates forearm
Triceps brachii
Extends forearm at elbow
Extensor carpi ulnaris
Extends wrist
Flexor carpi ulnaris
Flexes wrist
Extensor digitorum
Extends digits of hand and wrist
Flexor digitorum
Flexes digits of hand and wrist
Adductor longus
Flexes hip; adducts leg
Adductor magnus
Extends hip; adducts leg
Gluteus maximus
Extends hip; rotates leg laterally
Gracilis
Adducts leg at hip; flexes knee
Tensor fasciae latae
Stabilizes hip and knee joint; abducts leg
Sartorius
Flexes hip and knee; laterally rotates thigh
Biceps femoris
Extends hip, flexes knee, laterally rotates leg
Semimembranosus
Extends hip, flexes knee
Semitendinosus
Extends hip, flexes knee
Vastus lateralis, medialis, and intermedius
Extends knee
Rectus femoris
Extends knee, flexes hip
Gastrocnemius
Plantar flexion at ankle; flexes knee
Tibialis anterior
Dorsiflexion and inversion