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Body Atlas, Muscle Reference

Muscles

Complete muscle reference, origins, insertions, nerve supply, actions, clinical notes, and common injuries.

63 muscles

63 muscles in Head & Skull Clear ×

Muscle Auricularis Anterior musculus auricularis anterior Head & Skull The auricularis anterior is one of three auricular muscles (with superior and posterior) that move the… Muscle Buccinator musculus buccinator Head & Skull The buccinator is the muscle of the cheek, forming the muscular wall of the buccal vestibule… Muscle Buccinator (Full) musculus buccinator Head & Skull The buccinator is the primary cheek muscle, keeping food between the teeth during chewing by compressing… Muscle Corrugator Supercilii musculus corrugator supercilii Head & Skull The corrugator supercilii is a small pyramidal muscle under the medial frontalis, pulling the eyebrow medially… Muscle Depressor Anguli Oris musculus depressor anguli oris Head & Skull The depressor anguli oris is a triangular muscle pulling the corner of the mouth downward, the… Muscle Depressor Labii Inferioris musculus depressor labii inferioris Head & Skull The depressor labii inferioris depresses and everts the lower lip, exposing the lower teeth and inner… Muscle Depressor Septi Nasi musculus depressor septi nasi Head & Skull The depressor septi nasi pulls the nasal base and septum downward during animation, producing the tip… Muscle Digastric (Full) musculus digastricus Head & Skull The digastric is a two-bellied suprahyoid muscle with different embryological origins and nerve supplies for each… Muscle Frontalis musculus frontalis Head & Skull The frontalis is the forehead muscle, the only elevator of the eyebrow, running from the galea… Muscle Genioglossus musculus genioglossus Head & Skull The genioglossus is the largest extrinsic tongue muscle and the primary protruder of the tongue. Its… Muscle Genioglossus musculus genioglossus Head & Skull The genioglossus is the largest tongue muscle and the most important muscle for maintaining upper airway… Muscle Geniohyoid musculus geniohyoideus Head & Skull The geniohyoid is a narrow muscle running from the inner mandibular chin to the hyoid, acting… Muscle Geniohyoid musculus geniohyoideus Head & Skull The geniohyoid lies superior to the mylohyoid, connecting the mandible to the hyoid. It is one… Muscle Hyoglossus musculus hyoglossus Head & Skull The hyoglossus is a flat, quadrilateral muscle connecting the hyoid bone to the lateral tongue, depressing… Muscle Hyoglossus musculus hyoglossus Head & Skull The hyoglossus depresses and retracts the tongue, acting as the antagonist to the genioglossus. Its most… Muscle Inferior Oblique (Eye) musculus obliquus inferior oculi Head & Skull The inferior oblique is one of the six extra-ocular muscles, the only one not arising from… Muscle Inferior Pharyngeal Constrictor musculus constrictor pharyngis inferior Head & Skull The inferior pharyngeal constrictor has two functionally distinct parts. The thyropharyngeus constricts the hypopharynx during swallowing.… Muscle Inferior Rectus (Eye) musculus rectus inferior oculi Head & Skull The inferior rectus depresses the abducted eye and is associated with the lower eyelid retractors, explaining… Muscle Lateral Pterygoid musculus pterygoideus lateralis Head & Skull The lateral pterygoid is the only masticatory muscle that actively opens the jaw, working with the… Muscle Lateral Pterygoid musculus pterygoideus lateralis Head & Skull The lateral pterygoid is the only jaw muscle with two heads with opposing functions. The inferior… Muscle Lateral Rectus (Eye) musculus rectus lateralis oculi Head & Skull The lateral rectus is the only extra-ocular muscle supplied by the abducens nerve (CN VI), making… Muscle Levator Anguli Oris musculus levator anguli oris Head & Skull The levator anguli oris lifts the corner of the mouth upward and slightly medially, deepening the… Muscle Levator Labii Superioris musculus levator labii superioris Head & Skull The levator labii superioris elevates the upper lip and deepens the nasolabial fold, contributing to expressions… Muscle Levator Labii Superioris musculus levator labii superioris Head & Skull The levator labii superioris elevates the upper lip and dilates the nostril. Its nasolabial deepening action…