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Head & Shoulders

BIO 201 Muscle Handout

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 I’m 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
Created by: rolyatstrebor