Muscle Actions
Order by
40 terms
Latin | English |
|---|---|
| Occipitofrontalis |  Draws scalp ant and post. raises eyebrows, wrinkles skin |
| Orbicularis oculi | closes eye as in blinking |
| masseter | elevates mandible |
| temporalis | closes jaw |
| buccinator | compresses cheeks against teeth and lips, whistling, blowing, keeps food between teeth, not lips |
| sternocleidomastoid | pulls head to one side, flexes neck or elevates sternum |
| trapezius | rotates scapula, various fibers raise, pull scapula medially, or pull scapula and shoulder downward |
| serratus anterior | pulls scapula anteriorly and downward |
| pectoralis minor | abducts scapula and rotates downward, elevates ribs during inhalation |
| pectoralis major | flexes, adducts, and rotates arm |
| teres major | extends, adducts, and rotates are medially |
| latissimus dorsi | extends, adducts, and rotates arm medially, or pulls shoulder downward and back |
| deltoid | abducts, extends, and flexes arm |
| intraspinatus | rotates arm laterally |
| teres minor | rotates arm laterally |
| biceps brachi | flexes forarm at elbow and rotates hand laterally |
| brachialis | flexes arm at elbow |
| brachioradialis | flexes elbow |
| triceps brachi | extends forarm at elbow |
| external oblique | tenses abdominal wall and compresses abdominal contents flexes and rotates vetebral colum |
| internal oblique | tenses abdominal wall and compresses abdominal contents flexes and rotates vetebral colum |
| rectus abdominis | compresses abdomen and aids in defecation, urination flexes vetebral colum |
| external urethral sphincter | helps last drops of urin vaginal wall in femals, and semen |
| external anal sphincter | keeps anal canal and anus closed of perineum |
| gluteus maximus | extends thigh at hip |
| gluteus medius | abducts and rotates thigh medially |
| tensor fasciae latae | abducts, flexes, and rotates thigh medially |
| adductor longus | adducts, flexes and rotates thigh medially |
| adductor magnus | adducts, extends and rotates thigh laterally |
| biceps femoris | flexes and rotates leg laterally and extends thigh |
| semitendinosus | flexes and rotates leg medially and extends thigh |
| semimembranosus | flexes and rotates leg medially and extends thigh |
| rectus femoris | extends leg at knee |
| vastus lateralis | extends leg at knee |
| vastus medialis | extends leg at knee |
| vastus intermedius | extends leg at knee |
| sartorius | flexes leg and thigh, abducts and rotates thigh laterally |
| tibialis anterior | dorsiflexion and inversion |
| gastrocnemius | planter flexion of foot and flexion of leg at knee |
| soleus | planter flexion of foot |
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