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Muscles antomy
names of the muscles and classifications
| Question | Answer |
|---|---|
| Trapezius | moves the scapula and extends the head |
| Latissimus dorsi | pulls arms down forcefully |
| Gluteus Maximus | Extends and rotates the thigh |
| Gracilis | Adducts and rotates the thigh |
| Rectus femoris | Flexes the hip and extends the leg at the knee |
| Biceps femoris | Flexes leg at the knee and extends the thigh |
| semitendonosus | Flexes leg at the knee and extends the thigh |
| frontalis | moves the forehead and eyebrows |
| zygomaticus major | used for smiling |
| orbicularis oris | used for kissing |
| occipitalis | draws the scalp backwards |
| sternocleidomastoid | turns the head to the side or to the chest |
| Deltoid | abducts,roatates,and extends the arm |
| pectoralis major | adducts and rotates the arm |
| external obliques | beds the vertebral column laterally |
| Rectus abdominum | Flexes vertebral column and the ab's |
| linea alba | white fibrous band covering the abdomen |
| Triceps brachii | flexes arm |
| Biceps brachii | flexes arm |
| Extensor digitorum | extends the hand and fingers |
| Brachioradialis | flexes the forearm |
| Sartorius | flexes the knee; crosses the legs |
| Adductor longus | adducts the leg |
| Quadriceps femoris | extends leg at the knee |
| Gastrocnemius | Plantar flexes the foor |
| Soleus | plantar flexes the foot |
| Achilles tendon | attaches gastrocnemius to calcaneus |
| Extensor digitorum longus | dorsiflexes and everts foot |
| Tibialis anterior | Dorsiflexes and inverts the foot |
| Cardiac Muscles | found in the heart, striated and involuntary |
| Smooth Muscles | found in many internal organs and blood vessels, involuntary is not striated |
| Skeletal Muscles | found on the skeletal system are voluntary and are striated |
| Synergists | work together |
| Antagonist | do opposite actions |
| Fixators | stabalize the origin of the prime mover |
| How are muscles named? | Direction,Size,Shape,Action,Number of origins,and Location |