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Buccinator Muscle -Action : Compression of cheek -Origin : Pterygomandibular raphe Maxilla (lateral aspect) Mandible (lateral body) -Insertion: Blends with muscles at angle of mouth -Innervation: Facial Nerve (Cranial Nerve VII) |
Depressor anguli oris muscle Action: -Depression of the angle of the mouth Origin: - Mandible (Body) Insertion: -Blends with muscle at the angle of the mouth Innervation -Facial nerve (cranial nerve VII) |
Depressor labii inferioris Action: -Depression of the lower lip (pout) Origin -Mandible (body) Insertion -Blends with muscles of the mouth Innervation -Facial nerve (cranial nerve VII) |
Frontalis Muscle Action : -Elevation of eyebrows -Creases skin on forehead -Moves scalp foreward and backward Origin : - Skin of eyebrow and forehead - Blends with obicularis oculi muscle Insertion : -Epicramial aponeurosis Innervation : - Facial nerve (Cranial nerve VII) |
Levator labii superioris alaeque nasi Action : - Elevation of upper lip - Dilation of naris Origin : - Maxilla Insertion : - Alar cartilage of nose - blends with muscles of upper lip Innervation : - Facial nerve (Cranial nerve VII) |
Levator labii superioris Action : - Elevation of upper lip (sneer) Origin : - Maxilla - zygomatic bone Insertion : - Blends with muscles of upper lip Innervation : - Facial Nerve (Cranial nerve VII) |
Nasalis Muscle Action : - Widens naris (flares nostrils) Origin : - Maxilla Insertion : - Alar cartilage (of nose) Innervation : - Facial nerve (cranial nerve VII) |
Occipitofrontalis Muscle Action : - Elevation of eyebrows - Creases skin of forehead - moves scalp backwards and forward Origin : - Occipitalis: occipital bone (Superior nuchal line) - frontalis: skin of eyebrow and forehead Insertion : - epicranial aponeurosis Innervation : - Facial nerve (cranial nerve VII) |
Orbicularis oculi muscle Action : -Closes eyelids (blink / wink) Origin : - Frontal bone - maxilla Insertion : - Fibers blend at lateral side of orbit Innervation : - Facial nerve (cranial nerve VII) |
Orbicularis oris muscle Action : - Closes / Protrudes lips (pucker) Origin : - Skin around the mouth - mandible (midline) - Maxilla (midline) Insertion : - Lips - Interdigitation with fibers from opposite side Innervation : - Facial nerve (cranial nerve VII) |
Platysma Muscle Action : - elevates and creases skin of neck - depression of lower lip and angle of mouth Origin : - Fascia or upper thorax and lower neck Insertion : - mandible (lower border) - skin and fascia of lower face - blends with muscles of lower lip and angle of mouth Innervation : - Facial nerve (cranial nerve VII) |
Zygomaticus major muscle Action : - Elevation of corner of mouth (smile) Origin : - zygomatic bone Insertion : - Blends with muscles at angle of mouth Innervation : - Facial nerve (Cranial nerve VII) |