Muscle Activity Lab by Allyson Danan

Frontalis

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The frontalis raises the eyebrows and wrinkles the forehead. Ex. Rises the eyebrows

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The orbicularis oculi closes the eyelids. Ex. Blinking

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The sternocleidmastoid flexes the neck, which rotates it. Ex. Moving the neck

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It elevates, depresses, adducts and stabilizes the scapula. Ex. It shrugs the shoulder.

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The biceps brachii supinates the forearm and flexes the elbow. Ex. Picking up and drinking water.

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The deltoid is the arm and shoulder abduction. Ex. Picking up a water bottle

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The pectoralis major adducts and flexes the arm and shoulder. Ex: Opening a door

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The latissimus dorsi extends and adducts the shoulder. Ex: Lifting a bag

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The satorius flexes the hip which brings the leg into a crossed position. Ex. Walking

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The quadriceps extends the knee. Ex. Getting up from a chair

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The gastrocnemius is the plantar flexion of the foot. Ex. Jumping up

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The hamstrings is the flexion of the knee. Ex. Bending down