Lab Exam #3 Actions Flashcards
Action of Frontalis
Raises the eyebrows
Action of Orbicularis Oculi
Closes the eye
Action of Zygomaticus
“smiling muscle”
Action of Orbicularis Oris
purses lips “kissing muscle”
Action of Masseter
closes jaw “chewing muscle”
Action of Sternocleidomastoid
cervical rotation and lateral flexion
Action of Platysma
tenses skin of neck
Action of Sternohyoid
depresses hyoid
Action of Pectoralis Major
adducts shoulder
Action of Pectoralis Minor
draws scapula forward
Action of Serratus anterior
draws scapula forward “boxing muscle”
Action of External intercostals
elevates rib cage aids inspiration
Action of Internal intercostals
depresses rib cage aids expiration
Action of External Oblique
flexes and rotates trunk
Action of Internal Oblique
flexes and rotates trunk
Action of Transverse Abdominis
compresses abdominal contents
Action of rectus abdominis
flexes trunk, compresses abdomen
Action of Trapezius (upper, middle, lower)
elevates, depresses, retracts scapular, extends c-spine
Action of Latissimus Dorsi
Adducts shoulder
Action of Errector Spinae
extends vertebral column
Action of Deltoid
flexes, abduct, or extend shoulder
Action of Rhomboids
pulls scapulae medially
Action of Supraspinatus
synergist with deltoid, stabilizes shoulder
Action of Infraspinatus
rotates humerus laterally, stabilizes shoulder
Action of Subscapularis
rotates humerus medially, stabilizes shoulder
Action of Teres Minor
rotates humerus laterally, stabilizes shoulder
Action of Teres Major
synergist with latissimus dorsi
Action of Biceps Brachii
Flexes elbow, supinates forearm
Action of Brachialis
flexes elbow
Action of Triceps Brachii
extends elbow
Action of Brachioradialis
Flexes Elbow
Action of Flexor Carpi Radialis
Flexes wrist
Action of Palmaris Longus
Flexes wrist
Action of Flexor Carpi Ulnaris
Flexes wrist
Action of Extensor Digitorum
extends wrist and fingers
Action of Sartorius
flexes and externally rotates hip, flexes knee
Action of Gracills
adducts hip
Action of Adductor Magnus
Adducts hip
Action of Adductor Longus
adducts hip
Action of Adductor Brevis
adducts hip
Action of Biceps Femoris
flexes knee, extend thigh
Action of Semimembraneous
Flexes knee, extend thigh
Action of Semitendinosus
Flexes knee, extend thigh
Action of Rectus Femoris
flexes hip, extends knee
Action of Vastus Lateralis
extends knee
Action of Vastus Medialis
extends knee
Action of Vastus intermedialis
extends knee
Action of Tensor Fasciae Latae
Abducts Hip
Action of Gluteus Maximus
Extends hip
Action of Gluteus Medius
abducts hip
Action of Iliopsoas
flexes hip
Action of Pectineus
flexes and adducts hip
Action of Gastrocnemius
Plantarflexes ankle
Action of soleus
plantarflexes ankle
Action of Tibialis Anterior
dorsiflexes ankle
