AsclepioMuscles in 3D
More than 600 skeletal muscles attach to bones by tendons and move them by contracting. They work in opposing pairs, like the biceps and the triceps. In a…
Explained for every age
For kids (7–11)
Muscles are the body's motors. You pull on them to move, and even to smile or breathe.
For teens (12–16)
More than 600 skeletal muscles attach to bones by tendons and move them by contracting. They work in opposing pairs, like the biceps and the triceps. In a young adult they make up about 40% of body weight.
Pre-Med (17+)
Voluntary striated skeletal muscle (≈ 40% of body mass), organized into fascicles of multinucleated fibers with sarcomeres of actin and myosin. Contraction through calcium-mediated excitation-contraction coupling. Attachments via tendons; innervation by motor units.
What you can explore
Investing abdominal fasciaAbductor digiti minimi of footAbductor digiti minimi of handAbductor hallucisAbductor pollicis brevisAdductor pollicisAnconeus muscleAnserine bursaAntebrachial fasciaAnterior intermuscular septum of legBicipitoradial bursaBrachial fasciaBucinatorClavipectoral fasciaCoccygeus muscleCommon tendinous ring
Missions
- The body’s motors Explorer
- Muscles in pairs Discoverer
- Attachments and innervation Pre-Med
- Muscles for playing Explorer
- Face muscles Explorer