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Muscle A&M
anatomy
| Question | Answer |
|---|---|
| frontalis | raises the eye brows |
| orbicularis oculi | blinks and closes eyes |
| orbicularis oris | closes and protrudes lips |
| temporalis | closes jaw |
| masseter | closes jaw |
| zygomaticus | raises corner of mouth |
| occipitalis | |
| buccinator | compresses cheek as in whistling and sucking; holds food between teeth during chewing |
| pectoralis major | adducts and flexes humerus |
| trapezius | extends neck and adducts scapula |
| latissimus dorsi | extends and adducts humerus |
| biceps brachii | flexes elbow and supinates forearm |
| gluteus maximus | extends hips |
| iliopsoas (iliacus and psoas major) | flexes hip |
| sartorius | flexes thigh on hip |
| tibialis anterior | dorsiflexes and inverts foot |
| gastrochemius | planter flexes foot and flexes knee |
| sternocleidomastoid | flexes neck; rotates head |
| platysma | pulls corners of mouth interiorly |
| deltoid | abducts arm |
| erector spinae (deep) | extends back |
| triceps brachii | extends elbow |
| gluteus medius | abducts thigh; steadies pelvis during walking |
| adductor group | adduct thigh |
| gracilis | |
| fibularis longus | |
| soleus | plantar flexes foot |
| quadriceps group | rectus femoris (flexes hip to thigh), vastus medialis, vastus latenalis, vastus intormedius (all. extend knee) |
| hamstring group | biceps femoris, semitendincsus, and semimembranosus all flex knee and extend hp |
| abdominal muscles | rectus abdominis, external oblique, and internal oblique (all flex vertebral column) external oblique and internal oblique (rotate vertebral column) transversus abdominis (compresses abdomin) |
| flexion | decreases the angle of the joint and brings two bones closer together |
| extension | increases the angle, or the distance, between two bones or parts of the body |
| hyperextension | the extension is greater than 180 degrees |
| abduction | moving a limb away from the midline, or median plane, of the body |
| adduction | the movement of a limb toward the body midline |
| circumduction | the proximal end of the limb is stationary, and its distal end moves in a circle |
| rotation | the movement of a bone around its longitudinal axis |
| dorsiflexion | lifting the foot so its superior surface approaches the shin |
| plantar flexion | depressing the foot (pointing the toes) |
| inversion | turn the sole of the foot medially |
| eversion | turn the sole of the foot laterally |
| supination | when the forearm rotates laterally so that the palm faces anteriorly and the radius and ulna are parallel |
| pronation | when the forearm rotates medially so that the palm faces posteriorly |
| opposition | the saddle joint, in the palm of the hand, between metacarpal1 and carpals allows opposition of the thumb |
Created by:
lizhopper2
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