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  1. Human muscle system | Functions, Diagram, & Facts | Britannica

    Sep 26, 2025 · Human muscle system, the muscles of the human body that work the skeletal system, that are under voluntary control, and that are concerned with movement, posture, and …

  2. Muscle disease | Description, Causes, Types, & Treatment

    Muscle disease, any of the diseases and disorders that affect the human muscle system. Because muscles and neurons supplying muscle cells operate as functional units, disease of both …

  3. human muscle system Facts | Britannica

    Human muscle system, the muscles of the human body that work the skeletal system, that are under voluntary control, and that are concerned with movement, posture, and balance.

  4. Muscle | Systems, Types, Tissue, & Facts | Britannica

    Oct 10, 2025 · This article consists of a comparative study of the muscle systems of various animals, including an explanation of the process of muscle contraction. For an account of the …

  5. Human muscle system - Abdominal Muscles, Anatomy, Function

    Sep 26, 2025 · Human muscle system - Abdominal Muscles, Anatomy, Function: There are three muscular layers of the abdominal wall, with a fourth layer in the middle anterior region.

  6. Human muscle system - Shoulder Muscles, Joints, Movements

    Sep 26, 2025 · Human muscle system - Shoulder Muscles, Joints, Movements: The shoulder is a complex ball-and-socket joint comprising the head of the humerus, the clavicle (collarbone), …

  7. Human muscle system - Evolution, Anatomy, Function | Britannica

    Sep 26, 2025 · Human muscle system - Evolution, Anatomy, Function: The arrangement of striated muscle in modern humans conforms to the basic plan seen in all pronograde …

  8. Cardiac muscle | Definition, Function, & Structure | Britannica

    The human heart and cardiovascular system explained The heart, located between the lungs, powers the circulatory system. (more) See all videos for this article

  9. muscle - Kids | Britannica Kids | Homework Help

    All the muscles in an animal’s body make up its muscular system. There are three types of muscle. Muscle connected to a skeleton is called skeletal muscle. Animals with backbones, …

  10. Bird - Muscles, Organs, Flight | Britannica

    Oct 13, 2025 · Bird - Muscles, Organs, Flight: Birds have a complete separation between pulmonary and systemic circulation, hearts that are large for their body weight, lungs …