
- 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 … 
- 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 … 
- 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. 
- 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 … 
- 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. 
- 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), … 
- 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 … 
- 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 
- 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, … 
- 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 …