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

    Nov 24, 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 balance.

  2. Muscle - Wikipedia

    Muscle tissue gives skeletal muscles the ability to contract and relax. Muscle tissue contains special contractile proteins called actin and myosin which interact to cause movement.

  3. Muscles of the Body: Types, Groups, Anatomy & Functions

    Muscles are pieces of soft tissue throughout your body that help you move, breathe, swallow and stay alive.

  4. Interactive Guide to the Muscular System | Innerbody

    Dec 22, 2025 · Explore the muscular system with Innerbody's interactive 3D anatomy models including the muscles of the arms, legs, chest, back, and more.

  5. Muscles - Bone, Joint, and Muscle Disorders - Merck Manual Consumer Version

    The size and strength of skeletal muscles are maintained or increased by regular exercise. In addition, growth hormone and testosterone help muscles grow in childhood and maintain their size in adulthood.

  6. How to Learn Anatomy: Muscles - Action - TeachMeAnatomy

    Jun 14, 2025 · In this article, we shall look at a six-part framework for describing muscles – site, shape, attachments, action, nerve supply, and blood supply. This structure can be applied to any skeletal …

  7. Muscular system | Learn Muscular Anatomy - Visible Body

    Muscles allow us to move. Smooth, cardiac, and skeletal muscle move to facilitate body functions like heartbeats, digestion, and moving bones. Neurotransmitters and chemical reactions work together to …

  8. Types of Muscles: Structure, Physiology, and Functions

    Aug 16, 2025 · Detailed anatomy and physiology of different types of muscles- skeletal, smooth, and cardiac muscle, including structure, mechanisms, and functions.

  9. Muscular system: 11 main functions and more - Medical News Today

    Jul 10, 2025 · Muscles allow a person to move, speak, and chew. They control heartbeat, breathing, and digestion. Other seemingly unrelated functions, including temperature regulation and vision, also rely …

  10. Quick Facts:Muscles - MSD Manual Consumer Version

    Muscles generate energy from food and oxygen that come through your bloodstream. Muscles use this energy to contract (shorten). The bigger the muscles are and the more blood supply they have, the …