Anatomy: Head and Neck Muscle Innervations + Function
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32 terms
Terms | Definitions |
|---|---|
 Epicranius (Occipitofrontalis) | Innervation: Facial Nerve (CN VII) Function: Produce wrinkles in forehead. Astonishment |
| Temporoparietalis | Innervation: Facial Nerve (CN VII) |
| Orbicularis Oculi | Innervation: Facial Nerve (CN VII) Function: Worry, Concern |
| Corrugator Supercilli | Innervation: Facial Nerve (CN VII) Function: Thinkers Brow |
| Orbicularis Oris | Innervation: Facial Nerve (CN VII) Function: Sucking shape of mouth. Reserve |
| Buccinator | Innervation: Facial Nerve (CN VII) Function: Allows air to be blown out. Satisfaction. |
| Zygomaticus Major | Innervation: Facial Nerve (CN VII) Function: Lifts corner of mouth up. Laughter, pleasure. |
| Zygomaticus Minor | Innervation: Facial Nerve (CN VII) Function: Lifts corner of mouth up. Laughter, pleasure. |
| Risorius | Innervation: Facial Nerve (CN VII) Function: Nasolabial Folds. Action. |
| Levator Labii Superioris | Innervation: Facial Nerve (CN VII) Function: ? |
| Levator Anguli Oris | Innervation: Facial Nerve (CN VII) Function: Self Confidence |
| Depressor Anguli Oris | Innervation: Facial Nerve (CN VII) Function: Sadness |
| Depressor Labii Inferioris | Innervation: Facial Nerve (CN VII) Function: Perseverance |
| Mentalis | Innervation: Facial Nerve (CN VII) Function: Doubt, indecision. |
| Platysma | Innervation: Facial Nerve (CN VII) Function: Sadness |
| Masseter | Innervation: Masseteric Nerve (CN V/3) Function: Powerfully closes jaw. |
| Temporalis | Innervation: Deep Temporal Nerve (CN V/3) Function: Strongest elevator of lower jaw. |
| Lateral Pterygoid | Innervation: Lateral Pterygoid N (CN V/3) Function: Mandibular movement. |
| Medial Pterygoid | Innervation: Medial Pterygoid N (CN V/3) Function: Elevate Mandible |
| Trapezius | Innervation: Accessory Nerve (CN XI). C3-C4 (propioception + pain). Function: Lifts shoulders |
| Sternocleidomastoid | Innervation: Accessory Nerve (CN XI). C3-C4 (propioception + pain) Function: |
| Omohyoid | Innervation: Cervical Ansa C1-C3 Function: Fascia tensor. Dilates internal jugular vein. |
| Sternohyoid | Innervation: Cervical Ansa C1-C3 Function: Stabilize laryngeal cartilage. |
| Sternothyroid | Innervation: Cervical Ansa C1-C3 Function: Stabilize laryngeal cartilage. |
| Thyrohyoid | Innervation: Cervical Ansa C1-C3 Function: Stabilize laryngeal cartilage. |
| Digastric | Innervation: Anterior Belly: Nerve to Myelohyoid (CN V/3). Posterior Belly: Facial Nerve (CN VII). Function: Stabilize hyoid in speaking + swallowing. |
| Stylohyoid | Innervation: Facial Nerve CN VII Function: Elevate and retract hyoid. |
| Myelohyoid | Innervation: Myelohyoid Nerve CN V/3 Function: Elevates Hyoid, floor of mouth, and tongue during swallowing and speaking. |
| Geniohyoid | Innervation: C1 via Hypoglossal Nerve Function: Pulls hyoid anteroposteriorly. |
| Rectus Capitis | Innervation: Cervical Plexus C1 Function: Flexes head. |
| Longus Capitis | Innervation: Cervical Plexus C1-C4 Function: Turns head sideways. Bends head forward. |
| Longus Colli | Innervation: Cervical + Brachial Plexus C1-C8 Function: Bend cervical spine forward. |
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