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Body Atlas, Muscle Reference

Muscles

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

342 muscles
342 muscles
Muscle Flexor Pollicis Brevis musculus flexor pollicis brevis Hand & Wrist The flexor pollicis brevis has the unusual distinction of dual innervation, with the superficial head supplied… Muscle Flexor Pollicis Brevis musculus flexor pollicis brevis Hand & Wrist The FPB flexes the thumb MCP joint and is one of the three thenar muscles innervated… Muscle Flexor Pollicis Longus musculus flexor pollicis longus Forearm The flexor pollicis longus is the only long flexor of the thumb, supplying the powerful pinch… Muscle Flexor Pollicis Longus musculus flexor pollicis longus Forearm The FPL is the only flexor of the thumb IP joint and is essential for precision… Muscle Flexor Pollicis Longus (Full) musculus flexor pollicis longus Forearm The FPL is the only flexor of the thumb IP joint, providing the grip force for… Muscle Frontalis musculus frontalis Head & Skull The frontalis is the forehead muscle, the only elevator of the eyebrow, running from the galea… Muscle Gastrocnemius musculus gastrocnemius Lower Leg The gastrocnemius is the superficial, diamond-shaped calf muscle visible on the posterior lower leg, forming the… Muscle Gemellus Inferior musculus gemellus inferior Pelvis & Hip The gemellus inferior is the lower flanking muscle of the obturator internus tendon, originating from the… Muscle Gemellus Inferior (Full) musculus gemellus inferior Pelvis & Hip The gemellus inferior arises from the ischial tuberosity upper border (immediately above the quadratus femoris) and… Muscle Gemellus Superior musculus gemellus superior Pelvis & Hip The gemellus superior is the upper of the two gemellus muscles flanking the obturator internus tendon,… Muscle Gemellus Superior (Full) musculus gemellus superior Pelvis & Hip The gemellus superior arises from the ischial spine and blends with the obturator internus tendon to… Muscle Gemellus Superior and Inferior musculus gemellus superior et inferior Pelvis & Hip The gemellus superior and gemellus inferior are two small, strap-like muscles flanking the obturator internus tendon… Muscle Genioglossus musculus genioglossus Head & Skull The genioglossus is the largest tongue muscle and the most important muscle for maintaining upper airway… Muscle Genioglossus musculus genioglossus Head & Skull The genioglossus is the largest extrinsic tongue muscle and the primary protruder of the tongue. Its… Muscle Geniohyoid musculus geniohyoideus Head & Skull The geniohyoid lies superior to the mylohyoid, connecting the mandible to the hyoid. It is one… Muscle Geniohyoid musculus geniohyoideus Head & Skull The geniohyoid is a narrow muscle running from the inner mandibular chin to the hyoid, acting… Muscle Gluteus Maximus musculus gluteus maximus Pelvis & Hip The gluteus maximus is the largest muscle in the human body by volume and the primary… Muscle Gluteus Medius musculus gluteus medius Pelvis & Hip The gluteus medius is a broad, fan-shaped muscle on the outer surface of the pelvis, partially… Muscle Gluteus Medius (Full) musculus gluteus medius Pelvis & Hip The gluteus medius is the most important hip abductor, essential for maintaining a level pelvis during… Muscle Gluteus Minimus musculus gluteus minimus Pelvis & Hip The gluteus minimus is the smallest and deepest of the three gluteal muscles, lying directly beneath… Muscle Gluteus Minimus (Full) musculus gluteus minimus Pelvis & Hip The gluteus minimus is the deepest gluteal muscle, lying directly on the hip joint capsule and… Muscle Gracilis musculus gracilis Thigh The gracilis is the most medial and superficial thigh muscle, a thin strap muscle spanning from… Muscle Gracilis (Full) musculus gracilis Thigh The gracilis is the most medial thigh muscle, the only two-joint adductor (acting at both hip… Muscle Hamstrings musculi ischiocruris Thigh The hamstrings are a group of three muscles, biceps femoris, semitendinosus, and semimembranosus, running along the…
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