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34 Cards in this Set
- Front
- Back
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Epicranius
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Bipartite muscle consisting of the frontalis and occipitalis muscles connected by a cranial aponeurosis.
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Frontalis
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Covers forehead and dome of skull. Part of epicranius.
O: galea aponeurotica I: skin above nose and eyes A: raises the eyebrows & wrinkles forehead |
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Occipitalis
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Overlies posterior occiput
O: Superior nuchal lines of the occipital bone I: galea aponeurotica A: Draws back scalp. |
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Orbicularis Occuli
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Orbital, Palpebral, Lacrimal parts
O: Medial margin of orbit. (frontal, maxilla, lacrimal) Innsertion: O - encircles orbit P - Lateral Palpebral ligament into zygomatic bone L - Lateral Palpebral ligament A: closes eye |
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Orbicularis Oris
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Multilayered muscle of the lips with fibres that run in many different directions, mostly circularly.
O: corner of mouth I: other muscles at angels of mouth A: closes/purses/protrudes lips (kissy lips) |
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Zygomatic Major
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Muscle extending diagonally from cheekbone to corner of mouth.
O: zygomatic bone I: angle of mouth A: draws angle of mouth upward ("smiling muscle") |
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Levator Labii Superioris
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Thin muscle between obicularis oris and inferior eye margin.
O: zygomatic bone and infraorbital foramen, corner of eye to side of nose I: skin/muscle of upper lip A: raises upper lip |
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Depressor Labii Inferioris
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Small muscle running from mandible to lower lip
O: mandible I: skin of lower lip A: draws lower lip downward and laterally (pout) |
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Buccinator
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Thin, horizontal cheek muscle deep to masseter
O: alveolar process of maxilla and mandible I: corner of mouth A: compresses cheek |
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Mentalis
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One of the muscle pair forming a V-shaped muscle mass on the chin
O: incisive fossa of mandible I: skin of chin A: raises and protrudes lower lip & wrinkles skin of chin |
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Masseter
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Origin: zygomatic arch, zygomatic process of maxilla
Insertion: ramus of mandible Action: clenches teeth, closes lower jaw Nerve: Trigeminal |
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Platysma
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Unpaired, thin, sheetlike superficial neck muscle
O: on the connective tissue that covers the muscle of the shoulder I: muscles of chin and jaw, mandible A: depresses and and draws lower lip latteraly, draws up the skin of chest. |
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Risorius
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Slender muscle inferior and lateral to zygomaticus
O: over parotid gland I: skin at angle of mouth A: retracts angle of mouth, as in grinning, looking tense |
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Temporalis
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Fan-shaped muscle that covers parts of the temporal, frontal, and parietal bones
O: superior and inferior temporal lines of parietal I: coronoid process of mandible A: Closes jaw, clenches teeth |
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Sternocleidomastoid
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Two-headed muscle located deep to platysma on anterolateral surface of neck.
O: sternum and clavicle I: mastoid process of temporal bone A: flexes neckdown, rotates head Nerve: spinal accessory and cervicle nerve |
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Scalenus Anterior
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Origin: transverse processes of C3-C6
Insertion: 1st rib Nerve: Cervical Action: flexes and rotates neck, elevates 1st rib |
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Scalenus Medial
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Origin: transverse processes of C2-C7
Insertion: rib Action: flexes and rotates neck, elevates 1st rib |
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Scalenus Posterior
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Origin: transverse processes of C5-C7
Insertion: 2nd rib Action: flexes and rotates neck, elevates 2nd rib Nerve: Cervical |
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Longus capitis
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Origin: transverse processes of C3-C6
Insertion: occipital bone anterior to foramen magnum Action: flexes the head Nerve: C1-C3 |
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Nasalis
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Origin: maxilla
Insertion: muscle on opposite side over the bridge of the nose Action: maintains opening of nose (flares nostrils) Nerve: facial |
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Procerus
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Origin: Fascia over nasal bone
Insertion: Skin between eyebrows Action: draws eyebrows downward Nerve: facial |
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Deppressor Anguli Oris
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Origin: oblique line of the mandible
Insertion: angle of the mouth Action: depresses angle of the mouth as in frowning (chewing muscle) Nerve: facial |
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Auricularis Anterior
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Origin: temporal
Insertion: helix of ear Action: draws ear foreward Nerve: facial |
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Auricularis Superior
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Origin: temporal
Insertion: superior part of the ear Action: draws ear upward Nerve: facial |
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Auricularis Posterior
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Origin: mastoid region of temporal bone
Insertion: posterior part of the ear Action: draws ear upward Nerve: facial |
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splenius capitis
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Origin: spinous processes of vertebra
Insertion: mastoid process of temporal bone Action: extends and rotates the head Nerve: cervical |
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splenius cervicis
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Origin: Spinous processes T3-T6
Insertion: transverse processes of C1-C3 Action: extends and rotates head Nerve: cervical |
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levator scapulae
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Origin: spines of vertebra
Insertion: scapula Action: elevates scapula, rotates scapula, pulls scapula medially upward, bends neck latterally (shrugs shoulders) Nerve: cervical |
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Semispinalis capitus
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Origin: transverse processes of T1-T6
Insertion: between superior & inferior nuchal lines of occipital bone Action: controls lateral flexion to side opposite contraction, maintains head posture Nerve: spinal |
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Auricularis Posterior
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Origin: mastoid region of temporal bone
Insertion: posterior part of the ear Action: draws ear upward Nerve: facial |
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splenius capitis
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Origin: spinous processes of vertebra
Insertion: mastoid process of temporal bone Action: extends and rotates the head Nerve: cervical |
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splenius cervicis
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Origin: Spinous processes T3-T6
Insertion: transverse processes of C1-C3 Action: extends and rotates head Nerve: cervical |
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levator scapulae
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Origin: spines of vertebra
Insertion: scapula Action: elevates scapula, rotates scapula, pulls scapula medially upward, bends neck latterally (shrugs shoulders) Nerve: cervical |
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Semispinalis capitus
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Origin: transverse processes of T1-T6
Insertion: between superior & inferior nuchal lines of occipital bone Action: controls lateral flexion to side opposite contraction, maintains head posture Nerve: spinal |
