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Body Atlas, Muscle Reference

Muscles

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

676 muscles

676 muscles

Muscle Orbicularis Oris (Full) musculus orbicularis oris Head & Skull The orbicularis oris is the lip sphincter, formed by interlacing fibres from the surrounding facial muscles… Muscle Orbicularis Oris Labial Part pars labialis m. orbicularis oris Head & Skull The labial part constitutes the main body of the orbicularis oris, responsible for lip closure and… Muscle Orbicularis Oris Marginal Part pars marginalis m. orbicularis oris Head & Skull The marginal part consists of the fibres immediately adjacent to the vermilion border, responsible for eversion… Muscle Palatoglossus musculus palatoglossus Head & Skull The palatoglossus forms the palatoglossal arch (anterior pillar of the fauces) and is the only tongue… Muscle Palatopharyngeus musculus palatopharyngeus Head & Skull The palatopharyngeus forms the palatopharyngeal arch (posterior pillar of the fauces) and connects the soft palate… Muscle Palatopharyngeus Muscle musculus palatopharyngeus Neck The palatopharyngeus forms the posterior tonsillar pillar, running from the soft palate posterolaterally to the pharyngeal… Muscle Palmar Interossei musculi interossei palmares Hand & Wrist The three palmar interossei are unipennate muscles adducting the index, ring, and little fingers toward the… Muscle Palmar Interossei Detail musculi interossei palmares detail Hand & Wrist The palmar interossei adduct the fingers. There are three (some authors count four including the thumb… Muscle Palmaris Brevis musculus palmaris brevis Hand & Wrist The palmaris brevis is a small, thin subcutaneous muscle at the medial palm that inserts directly… Muscle Palmaris Brevis Detail musculus palmaris brevis detail Hand & Wrist The palmaris brevis is the most superficial intrinsic hand muscle, attaching the palmar aponeurosis to the… Muscle Palmaris Longus musculus palmaris longus Forearm The palmaris longus is a slender, inconstant forearm muscle absent in roughly 14 percent of people… Muscle Palmaris Longus Detail musculus palmaris longus detail Forearm Palmaris longus is absent in 14% of individuals. It has the longest tendon of any forearm… Muscle Pectineus musculus pectineus Thigh The pectineus is a flat, quadrangular muscle forming the medial wall of the femoral triangle, running… Muscle Pectineus (Full) musculus pectineus Thigh The pectineus is the most superior adductor, lying in the floor of the femoral triangle and… Muscle Pectineus Detail musculus pectineus detail Thigh The pectineus is the most anterior hip adductor and is uniquely flat rather than fusiform. Its… Muscle Pectoralis Major musculus pectoralis major Chest The pectoralis major is a large, fan-shaped muscle that spans the front of the upper chest,… Muscle Pectoralis Major (Clavicular Head) musculus pectoralis major pars clavicularis Chest The clavicular head of the pectoralis major is the upper portion of the fan-shaped pectoral muscle,… Muscle Pectoralis Major (Sternocostal Head) musculus pectoralis major pars sternocostalis Chest The sternocostal head is the larger and more powerful component of the pectoralis major, providing the… Muscle Pectoralis Major Detail musculus pectoralis major detail Chest The pectoralis major is the dominant anterior chest muscle with a unique twisted insertion that reverses… Muscle Pectoralis Major Sternal Head pars sternalis musculi pectoralis majoris Shoulder The sternal head of pectoralis major is the larger, more powerful component, originating from the sternum… Muscle Pectoralis Minor musculus pectoralis minor Chest The pectoralis minor is a thin, triangular muscle that lies completely underneath the pectoralis major, connecting… Muscle Pectoralis Minor (Coracoid Insertion) m. pectoralis minor (insertio coracoidea) Shoulder The pectoralis minor insertion at the coracoid is the structure shortened in anterior shoulder tightness syndromes… Muscle Pectoralis Minor (Full) musculus pectoralis minor Chest Pectoralis minor is the key muscle producing anterior scapular tilt (inferior angle lifted away from the… Muscle Peroneus Brevis musculus peroneus brevis Lower Leg The peroneus brevis is the shorter and deeper of the two peroneal muscles, running from the…

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