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Body Atlas, Muscle Reference

Muscles

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

118 muscles

118 muscles in Head & Skull Clear ×

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 dilates the nostril. Its nasolabial deepening action… Muscle Levator Labii Superioris Alaeque Nasi musculus levator labii superioris alaeque nasi Head & Skull The levator labii superioris alaeque nasi is one of the longest named muscles in the body,… Muscle Levator Labii Superioris Detail musculus levator labii superioris detail Head & Skull Levator labii superioris is a thin muscle that inserts into both skin and the upper lip… Muscle Levator Nasolabialis musculus levator nasolabialis Head & Skull The levator nasolabialis (also called levator labii superioris alaeque nasi — the longest named muscle in… Muscle Levator Palpebrae Superioris musculus levator palpebrae superioris Head & Skull The levator palpebrae superioris is the primary elevator of the upper eyelid, arising from the sphenoid… Muscle Levator Veli Palatini musculus levator veli palatini Head & Skull The levator veli palatini is the primary elevator of the soft palate, contracting to close the… Muscle Masseter musculus masseter Head & Skull The masseter is the most powerful jaw-closing muscle per unit cross-sectional area in the body, capable… Muscle Masseter (Full) musculus masseter Head & Skull The masseter is the most powerful jaw closing muscle, generating bite forces of 700-800 N at… Muscle Masseter Deep Head caput profundum m. masseteris Head & Skull The deep head of the masseter is smaller and more vertically oriented than the superficial head,… Muscle Masseter Superficial Head caput superficiale m. masseteris Head & Skull The superficial head is the larger component of the masseter, providing the dominant jaw-closing force. Its… Muscle Medial Pterygoid musculus pterygoideus medialis Head & Skull The medial pterygoid is a thick, quadrilateral muscle forming the medial sling of the temporomandibular joint… Muscle Medial Pterygoid Deep Head caput profundum m. pterygoidei medialis Head & Skull The deep head is the larger medial pterygoid component, arising from the medial pterygoid plate. It… Muscle Medial Pterygoid Superficial Head caput superficiale m. pterygoidei medialis Head & Skull The superficial head of the medial pterygoid arises from the maxillary tuberosity and forms the lateral… Muscle Medial Rectus (Eye) musculus rectus medialis oculi Head & Skull The medial rectus is the primary adductor of the eye and the strongest extra-ocular muscle by… Muscle Mentalis musculus mentalis Head & Skull The mentalis is the primary muscle of chin expression, producing the characteristic cobblestone or dimpled chin… Muscle Mentalis Detail musculus mentalis detail Head & Skull The mentalis is the primary chin muscle, producing the pout and chin dimple. It is the… Muscle Middle Pharyngeal Constrictor musculus constrictor pharyngis medius Head & Skull The middle pharyngeal constrictor forms the oropharyngeal muscular wall, with its fibres overlapping both the superior… Muscle Mueller’s Superior Tarsal Muscle musculus tarsalis superior Head & Skull Mueller's muscle (superior tarsal muscle) is a thin smooth muscle located between the levator palpebrae superioris… Muscle Musculus Uvulae musculus uvulae Head & Skull The musculus uvulae is a paired muscle within the uvula that shortens and thickens it during… Muscle Mylohyoid (Full) musculus mylohyoideus Head & Skull The mylohyoid forms the muscular floor of the oral cavity, separating the sublingual space above from… Muscle Nasalis musculus nasalis Head & Skull The nasalis has two functionally opposite parts: the transverse compressor narrows the nasal aperture during forced… Muscle Occipitalis musculus occipitalis Head & Skull The occipitalis is the posterior belly of the occipitofrontalis muscle, pulling the scalp posteriorly. With frontalis,…