HAI-Head, face muscl Word Scramble
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Muscle Name | Origin | Insertion | Action | Innervation |
Epicranius: Frontalis | Galea aponeurotica | Skin superior to supraorbital margin | Draws scalp anteriorly, wrinkles forehead horizontally, raises eyebrows | Facial XII (7) |
Epicranius: Occipitalis | Occipital bone, Mastoid process | Galea (epicranial), aponeuroptica | Draws skin posteriorly | Facial XII (7) |
Orbicularis oris | Circling the mouth | Mouth angle (skin @ corner of mouth) | Closes and protrudes lips, Compresses lips against teeth, Shapes lips during speech | Facial XII (7) |
Zygomaticus major | Zygomatic bone | Mouth angle, orbicularis oris muscle | Draws mouth superiorly (smiling) | Facial XII (7) |
Zygomaticus minor | Zygomatic bone | Upper lip | Elevates upper lip | Facial XII (7) |
Levator labii superioris | Superior to infraorbital foramen | Mouth angle, obicularis oris muscle | Elevates upper lip (snarl) | Facial XII (7) |
Orbicularis Oculi | Medial wall of orbit | Circle around orbit | Closes eye | Facial XII (7) |
Corrugator supercilii | Medial superciliary arch (eyebrow arch) of frontal bone | Skin of eyebrow | Draws eyebrows inferiorly, wrinkles forehead vertically (frown) | Facial XII (7) |
Levator Palpebrae Superioris | Root of orbit (sphenoid) | Skin of upper eyelid | Elevates eyelid (opepns eye) | Oculomotor III (3) |
Depressor labii inferioris | Mandible | Skin of lower lip | Depresses lower lip | Facial XII (7) |
Depressor labii oris | Mandible | Mouth angle | Draws angle of mouth laterally & inferiorly (opens mouth) | Facial XII (7) |
Buccinator | Aveolar processes | Orbicularis oris | Presses cheeks against teeth & lips. Draws corner of mouth laterally. Keeps food between teeth. | Facial XII (7) |
Mentalis | Mandible | Skin of chin | Elevates & protrudes lower lip | Facial XII (7) |
Platysma | Fascia over deltoid & pectoris major | Mandible. Orbicularis oris. Skin of lower face | Draws outer part of lower lip. Inferiorly & posteriorly (pouting). Depresses mandible. | Facial XII (7) |
Risorius | Fascia over parotid gland | Mouth angle | Draws angle of mouth laterally | Facial XII (7) |
Masseter | Maxilla. Zygomatic arch | Exterior ramus angle mandible | Elevates & retracts mandible | Mandibular branch trigeminal V (5) |
Temporalis | Temporal bone. Frontal bone | Coronoid process & ramus of mandible | Elevates and retracts mandible | Mandibular branch trigeminal V (5) |
Medial Pterygoid | Groove btw wings of pterygoid processes | Interior ramus / mandible | Elevates & moves mandible side to side. Protracts. | Mandibular branch trigeminal V (5) |
Lateral pterygoid | Lateral pterygoid process. | Condylar process of mandibular | Depresses and moves mandible side to side. | Mandibular branch trigeminal V (5) |
Genioglossus | Mandible | Hyoid bone. Underside of tongue | Depresses & protracts tongue (sticks tongue out) | Hypoglossal XII (12) |
Stylohyoid | Styloid process | Body of hyoid | Elevates hyoid | Facial VII (7) |
Mylohyoid | Interior mandible | Body of hyoid | Elevates hyoid & floor of mouth. Depresses mandible | Mandibular branch trigeminal V (5) |
Geniohyoid | Interior mandible | Body of hyoid | Draws tongue anteriorly. Elevates & draws hyoid anteriorly. Depresses mandible | Cranial I (1) |
Sternocleidomastoid | Sternum, clavicle | Mastoid process | Paired-extends head. Single- Laterally flex & rotate head to opposite side | Cranial-Accessory XI (11) |
Semispinalis capitis | C6-T7 | Btw superior & inferior nuchal lines | Paired- extends head. Single- rotates head to opposite side. | Cervical nerves |
Splenius Capitis | Ligamentum nuchae. T7-C4 | Occipital bone. Mastoid process. | Paired- extends head. Single- laterally flex & rotate head to same side. | Cervical nerves. |
Longissimus capitis | C4-T7 | Mastoid process | Paired- extends head. Single- laterally flex & rotate head to same side. | Cervical nerves. |
Sytloglossus | Sytloid process | Side and underside of tongue | Elevates & retracts tongue | Hypoglossal XII (12) |
Palatoglossus | Anterior soft palate | Side of tongue. | Elevates posterior tongue. Depresses soft palate. | Pharyngeal plexus. Vagus X (10). Accessory XI (11) |
Hyoglossus | Greater horn & body hyoid | Side of tongue | Depresses and draws down sides of tongue | Hypoglossal XII (12) |
Digastric- Anterior belly | Interior inferior mandible | Body of hyoid | Elevates hyoid, depresses mandible. | Mandibular branch Trigeminal V (5) |
Digastric- Posterior belly | Mastoid process | Body of hyoid | Elevates hyoid, depresses mandible. | Facial VII (7) |
Depressor Anguli Oris | Mandible | Mouth Angle | Draws mouth laterally and inferiorly | Facial (VII) |
Levator Anguli Oris | Inferior to infraorbital foramen | Skin of lower lip and orbicularis oris | Draws angle of mouth laterally and superiorly | Facial (VII) |
Superior Rectus | Common tendinous ring | Superior and central part of eyeball | Moves eyeball superiorly and medially, rotates medial | Oculomotor (III) |
Inferior Rectus | Common tendinous ring | Inferior and central part of eyeball | Moves eyeball inferiorly and medially, rotates medially | Oculomotor (III) |
Lateral Rectus | Common tendinous ring | Lateral side of eyeball | Moves eyeball laterally | Abductus (VI) |
Medial Rectus | Common tendinous ring | Medial side of eyeball | Moves eyeball medially | Oculomotor (III) |
Superior Oblique | Sphenoid, superior and medial to tendinous ring | Eyeball between superior and lateral recti via trochlea | Moves eyeball inferiorly and laterally, rotates medially | Trochlear (IV) SO4 |
Inferior Oblique | Maxilla in floor of orbit | Eyeball between inferior and lateral recti | Moves eyeball superiorly and laterally, rotates laterally | Oculomotor (III) |
Omohyoid | Superior border of scapula and superior transverse ligament. | Body of Hyoid. | Depresses hyoid bone. | Branches of spinal nerves C1-C3 |
Sternohyoid | medial end of clavicle and manubrium of sternum. | Body of Hyoid. | Depresses hyoid bone. | Branches of spinal nerves C1-C3 |
Sternothyroid | Manubrium of sternum. | Thyroid cartilage of larynx. | Depresses thyroid cartilage of larynx. | Branches of spinal nerves C1-C3 |
Thyrohyoid | Thyroid cartilage of larynx. | Greater horn of hyoid bone. | Elevates thyroid cartilage and depresses hyoid bone. | Branches of spinal nerves C1-C2 and descending hypoglossal (XII) 12 nerve |
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