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Axial Muscles
Muscle names
| Term | Definition |
|---|---|
| Extrinsic Eye Muscles | Control position of eye |
| Muscles of Mastication | Move the mandible |
| Muscles of the Tongue | Names end in glossus |
| Muscles of the Pharynx | Initiate swallowing process |
| Occipitofrontalis | raises eyebrows, wrinkles forehead |
| Orbicularis oris | sphincter muscle around mouth |
| Risorius | draws corner of mouth to the side |
| Buccinator | Compresses cheeks; used during suckling |
| Depressor labii inferioris | depresses lower lip |
| Levator labii superioris | elevates upper lip |
| Levator anguili oris | elevates corner of mouth |
| Depressor anguli oris | depressor corner of mouth |
| Mentalis | elevates and protrudes lower lip |
| Zygomaticus major | retracts, elevates corner of mouth |
| Zygomaticus minor | retracts, elevates upper lip |
| Levator palpebrae superioris | elevates upper eyelid |
| Orbicularis oculi | closes eye |
| Nasalis | compresses bridge, depresses tip of nose, elevates nostrils |
| Procerus | moves nose change shape of nostrils |
| Platysma | tenses skin of neck, depressed mandible, pulls lower lip down |
| Superior rectus | eye looks up |
| Inferior rectus | eye looks down |
| Medial rectus | eye looks medially |
| Lateral rectus | eye looks laterally |
| Inferior oblique | eye rolls, looks up and laterally |
| Superior oblique | eye rolls, looks down and laterally |
| Masseter | The strongest jaw muscle; elevates mandible, closes jaws |
| Temporalis | Elevates mandible |
| Pharyngeal constrictor muscles | Move food into esophagus |
| Laryngeal elevator muscles | Elevate the larynx |
| Palatal muscles | Lift the soft palate; open entrance to auditory tube |
| Digastric | depresses mandible; elevates larynx |
| Mylohyoid | depresses mandible; elevates floor of mouth |
| Geniohyoid | depresses mandible; elevates larynx |
| Sternocleidomastoid | flex the neck |
| Splenius capitis | extends the neck, rotates head, laterally flexes neck |
| Erector spinae | holds the spine erect; superficial and deep |
| Superficial erector spinae | extend vertebral column, lateral flexion of vertebral column |
| Deep erector spinae | connect and stabilize vertebrae, slight extension and rotation of vertebral column |
| Spinal flexors | Neck (2) rotate or flex neck Lumbar region (1) flex vertebral column; depress ribs |
| Oblique muscles | Compress underlying structures; rotate and flex vertebral column |
| Rectus muscles | Flex vertebral column; oppose erector spinae |
| Scalene muscles | oblique muscle that flexes the neck |
| Intercostal muscles | oblique muscles that aid in forced expiration |
| transversus thoracis | oblique muscles that cross inner surface of ribs; depresses the ribs |
| Diaphragm | rectus muscle that moves to help you breathe |
| Rectus abdominis | rectus muscle that tenses abdominal wall; flexes vertebral column |
| Perineum | muscular sheet forming the pelvic floor |
| Urogenital diaphragm | Supports the pelvic floor and muscles of the urethra |
| Pelvic diaphragm | Covered by urogenital diaphragm; Supports muscles of anus |
| external obliques, internal obliques, transversus abdominis | All play role in compressing the abdomen |
Created by:
bsauveur
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