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Head & Shoulders
BIO 201 Muscle Handout
Term | Definition |
---|---|
Origin: Epicranial Aponeurosis Insertion: Skin & Muscles Around Eyes Action: Raises Eyebrows As When Surprised | Frontalis |
Origin: Occipital Bone Insertion: Epicranial Aponeurosis Action: Synergistic to Frontalis | Occipitialis |
Origin: Temporal Bone Insertion: Coronoid Process of Mandible Action: Elevates Mandible as Iâm Chewing | Temporalis |
Origin: Maxillary & Frontal Bone Insertion: Skin Around Eye Action: Closes The Eye | Orbicularis Oculi |
Origin: Zygomatic Arch Insertion: Orbicularia Oris Action: Raises the Corner of Mouth | Zygomaticus |
Origin: Mandible & Maxilla Insertion: Orbicularis Oris Action: Compresses Cheek Inward (Blow Air) | Buccinator |
Origin: Zygomatic Arch Insertion: Mandible (Lateral) Action: Elevvates the Mandible | Masseter |
Origin: Muscles Near the Mouth Insertion: Skin of Central Lips Action: Closes Lips | Orbicularis Oris |
Origin: Fascia in Upper Chest Insertion: Lower Border of Mandible Action: Draws Lower Lip Downward | Platysma |
Origin: Manubrium (Sternum) & Clavicle Insertion: Mastoid Process (Temporal Bone) Action: Pulls Head to One Side, Flexes Neck | Sternocleidomastoid |
Origin: Occipital Bone & Spine of Cervical & Thoracic Vertebrae Insertion: Clavicle, Spine & Acromion Process of Scapula Action: Rotates, Raises and Lowers Scapula | Trapezius |
Origin: Spinous Proces (lower cervical & upper thoracic vertebrae) Insertion: Occipital Bone Action: Rotates Head, Extends Neck | Splenius Capitus |
Origin: C1-C4 Transverse Processes Insertion: Medial Margin of Scapula Action: Elevates Scapula | Levator Scapulae |
Origin: Supraspinous Fossa of Scapula Insertion: Greater Tubercle of Humerous Action: Abducts Arm | Supraspinatus |
Origin: Spines of C7 Insertion: Medial Border of Scapulae Action: Retracts (Adducts) and Elevates Scapulae | Rhomboideus Minor |
Origin: Spines of Superior Thoracic Vertebrae Insertion: Medial Border of Scapulae Action: Retracts (Adducts) Scapulae | Rhomboideus Major |