Head Muscles (Origin and Insertion)
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| This sphincter muscle encircles the mouth. | Orbicularis Oris
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| The origin of the Orbicularis Oris. | Several facial muscles, maxilla, mandible, and nasal septum.
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| The insertion and action of the Orbicularis Oris muscle. | - Insertion: lips
- Action: closes and puckers the lips
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| This sphincter muscle encircles the eyes. | Orbicularis Oculi
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| The origin of the Orbicularis Oculi. | Frontal and maxilla bones
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| The insertion and action of the Orbicularis Oris. | - Insertion: the eyelids
- Action: closes the eyelids
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| The muscle that is compose of two muscular parts that lie over the frontal and occipital bones. | Epicranius
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| The Epicranius (composed of two muscular parts) are joined by the _______ _______, which covers the top of the skull. | Epicranial aponeurosis
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| The origin of the Frontalis muscle. | On the aponeurosis
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| The insertion of the Frontalis muscle. | On the soft tissue under the eyebrows
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| The origin of the Occiptalis. | On the mastoid process and occipital bone
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| The insertion of the Occiptalis. | On the aponeurosis
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| The action of the Frontalis. | Elevates the eyebrows and wrinkles the forehead
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| The action of the Occiptalis. | Pulls the scalp backward
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| The origin of the two (2) Zygomaticus muscles (one on each side). | Zygomatic arch and extends diagonally to their origin
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| The insertion of the two (2) Zygomaticus muscles. | Orbicularis Oris at the corner of the mouth.
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| Action of the two (2) Zygomaticus muscles. | Draws the corner of the mouth upward and backward as in smiling and laughing.
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| The origin of the Triangularis muscles. | Mandible
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| The insertion of the Triangularis muscles. | Orbicularis Oris at the corner of the mouth.
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| The Triangularis muscle is antagonist to what muscle? | Zygomaticus
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