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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
Frontal Belly (Frontalis) |
Raises eyebrows; wrinkles the forehead; covers forehead and skull |
O: galea aponeurotica I: skin of eyebrows and root of nose |
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Occipital Belly (Occipitalis) |
Overlies the occipital bone; fixes aponeurosis and pulls scalp posteriorly |
O: Occipital and Temporal bones I: galea aponeurotica |
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Orbicularis Oculi |
Surrounds the orbit; blinking, squinting, and draws eyebrows inferiorly |
O: Frontal and Maxillary bones and ligaments around orbit I: tissue of eyelid |
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Zygomaticus (major and minor) |
Pair of muscles extending diagonally from cheekbone to corner of mouth; elevates corners of mouth (smiling) |
O: zygomatic bone I: skin and muscle at corner of mouth |
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Levator Labii Superioris |
Between orbicularis oris and inferior eye margin; opens lips; raises and furrows the upper lip |
O: zygomatic bone and infraorbital margin of manilla I: skin and muscle of upper lip |
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Depressor Labii Inferioris |
Small muscle running from mandible to lower lip; draws lower lip inferiorly (pout) |
O: body of mandible lateral to its midline I: skin and muscle of lower lip |
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Depressor Anguli Oris |
Small muscle lateral to depressor labii inferioris; draws corners of mouth downward and laterally |
O: body of mandible below incisors I: skin and muscle at angle of mouth below insertion of zygomaticus |
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Orbicularis Oris |
Encircles the lips; closes, purses, and protrudes lips |
O: arises indirectly from maxilla and mandible I: into skin and muscle at angles of mouth |
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Buccinator |
Principal muscle of the cheek; deep to masseter; draws corners of mouth laterally; compresses cheek (whistling and sucking) |
O: molar region of manilla and mandible I: orbicularis oris |
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Platysma |
Thin, sheet-like neck muscle involved in facial expression; helps depress mandible; pulls lower lip back and down; tenses skin of neck |
O: fascia of chest I: lower margin of mandible, skin and muscle at corner of mouth |
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Masseter |
Large muscle that covers the lateral aspect of the mandible; elevates the mandible |
O: zygomatic arch and maxilla I: angle of ramus of mandible |
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Temporalis |
Fan-shaped muscle that covers parts of temporal, frontal, and parietal bones; closes jaw |
O: temporal fossa I: coronoid process of mandible |
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Genioglossus |
Fan-shaped; forms bulk of tongue; protrudes tongue |
O: interior mandible; I: inferior tongue and hyoid |
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Hypoglossus |
Flat quadrilateral muscle; depresses tongue and draws its sides downward |
O: hyoid I: inferolateral tongue |
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Styloglossus |
Slender muscle running superiorly to and at right angles to hypoglossus |
O: styloid process of temporal bone I: inferolateral tongue |
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"glossus" |
Tongue (general) |
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"oris" |
Mouth (general) |
Oral |
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"oculis" |
Eye (general) |
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Digastric |
Two bellies united by an intermediate tendon, forming a V-shape under the chin; in concert: elevate the hyoid and steady it during swallowing; from behind: open mouth and depress mandible |
O: lower mandible and mastoid process of temporal bone I: connective tissue loop of hyoid |
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Stylohyoid |
Below angle of jaw; elevates and retracts hyoid |
O: styloid process of temporal bone I: hyoid bone |
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Mylohyoid |
Triangular muscle just deep to digastric muscle; forms floor of anterior mouth; elevates hyoid and floor of mouth to force food into pharynx |
O: medial surface of mandible I: hyoid and median raphe |
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Geniohyoid |
Runs from chin to hyoid bone deep to mylohyoid; pulls hyoid bone superiorly and anteriorly |
O: inner mandible I: hyoid bone |
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Sternohyoid |
Most medial muscle of the neck; depresses larynx and hyoid bone |
O: manubrium and medial end of clavicle I: lower edge of hyoid |
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Sternothyroid |
Lateral and deep to sternohyoid; pulls thyroid cartilage inferiorly |
O: posterior surface of manubrium I: thyroid cartilage |
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Omohyoid |
Strap-like; two bellies; lateral to sternohyoid; depresses and retracts hyoid bone |
O: superior surface of scapula I: hyoid bone |
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Thyrohyoid |
Appears as a superior continuation of sternothyroid muscle; depresses hyoid and elevates larynx (if hyoid is fixed) |
O: thyroid cartilage I: hyoid bone |
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Sternocleidomastoid |
Deep to platysma on anterolateral aspect of neck; flexes head (both working together); rotates head toward opposite shoulder (when working unilaterally) |
O: manubrium of sternum and medial portion of clavicle I: mastoid process of temporal bone and superior nuchal line of occipital bone |
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Scalenes |
Anterior, middle, and posterior; deep to platysma and sternocleidomastoid; elevates first two ribs (aid in inspiration); flex and rotate neck |
O: transverse processes of cervical vertebrae I: anterolaterally on first two ribs |
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Splenius (capitus and cervicus) |
Extends from upper thoracic vertebrae to skull; extend or hyperextend head (acting together); head is rotated and bent laterally toward the same side (acting alone) |
O: ligamentum nuchae, spinous processes of vertebrae C7-T6 I: mastoid process of temporal bone and occipital bone |