Anterior Muscles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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Sternocleidomastoid | Turns chin to opposite side, elevates (expands) thorax during forced inhalation.
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Scalenes - Anterior, Middle | Elevation of ribs during forced inhalation or bending of neck toward side of contracting.
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Sternohyoid | Depresses hyoid bone.
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Pectoralis Major | Flexion and adduction of arm.
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Pectoralis Minor | Draws scapula anteriorly and medially ( as in pointing the shoulder forward).
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External Intercostals | Elevates and expands rib cage during inhalation, (located between ribs).
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External Oblique | Compression of abdomen (forced exhalation, etc.), rotation and lateral flexion of "trunk".
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Internal Oblique | Compression of abdomen (forced exhalation, etc.), rotation and lateral flexion of "trunk".
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Rectus Abdominus | Compression of abdomen and flexion of "trunk".
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Biceps Brachii | Flexion and supination of forearm.
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Brachialis | Flexion of forearm.
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Coracobrachialis | Flexion and adduction of arm.
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Brachioradialis | Flexion of arm.
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Flexor Carpi Radialis | Flexion and abduction of hand at wrist.
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Flexor Digitorum | Flexion of phlanges, digits 2 - 5.
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Flexor Carpi Ulnaris | Flexion and adduction of hand at wrist.
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Extensor Digitorum | Extension of phlanges 2 -5.
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Extensor Carpi Radialis | Extension and abduction of the wrist.
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Extensor Carpi Ulnaris | Extension and adduction of hand at wrist.
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Sartorius | Flexion of thigh and leg.
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Rectus Femoris | Flexion of thigh and extension of leg.
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Vastus Lateralis | Extension of leg.
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Vastus Medialis | Extension of leg.
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Vastus Intermedius | Extension of leg.
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Gracilis | Adduction of thigh and flexion of leg.
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Adductor Longus | Adduction of thigh.
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Tibialis Anterior | Dorsiflexion and inversion of foot.
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