A&P I muscles and functions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Orbicularis Oculi | Closes the eyes
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| Zygomaticus | Raises lateral corners of the mouth (smiles)
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| Orbicularis Oris | Closes the mouth
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| Masseter | Closes the jaw & elevates the mandible
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| Platysma | Tension of skin of the neck
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| Sternocleidomastoid | Flexes and laterally rotates the head
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| Pectoralis Major | Adducts arm; medially rotates arm
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| Pectoralis Minor | Draws the scapula foward and downward
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| Deltoid | Arm abduction
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| Internal intercostals | Depresses the rib cage and draws ribs together
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| External intercostals | Elevates the rib cage and draws ribs together
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| Rectus abdominis | Flexes and rotates the lumbar region of the vertebral column
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| External obliques | Flexes the vertebral column and compresses the abdominal wall
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| Trapezius | Stabilizes, raises, retracts and rotates the scapula
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| Latissimus Dorsi | Extends and adducts arm; medially rotates arm at shoulder
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| Gluteus Maximus | Extends the thigh
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| Triceps brachii | Extends the forearm
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| Biceps brachii | Flexes the elbow joint and supinates forearm
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| Flexor digitorum profundus | Flexes the distal interphalangeal joints
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| Extensor digitorum | Finger extension
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| Sartorius | Flexes, abducts and laterally rotates thigh; flexes the knee
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| Quadriceps femoris | Knee extension
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| Rectus femoris | Extends knee and flexes thigh at hip
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| Vastus lateralis | Extends knee and stabilizes knee
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| Vastus medialis | Extends knee
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| Biceps femoris | Extends thigh and flexes knee
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| Gastrocnemius | Plantar flexes foot
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| Tibialis posterior | foot inversion
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Created by:
jpalao
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