
Human muscle system | Functions, Diagram, & Facts | Britannica
Dec 29, 2025 · The following sections provide a basic framework for the understanding of gross human muscular anatomy, with descriptions of the large muscle groups and their actions.
Human muscle system - Shoulder Muscles, Joints, Movements
Dec 29, 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), and the …
Human muscle system - Abdominal Muscles, Anatomy, Function
Dec 29, 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.
Muscle | Systems, Types, Tissue, & Facts | Britannica
Dec 22, 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 …
Skeletal muscle | Definition & Function | Britannica
Dec 13, 2025 · The following sections provide a basic framework for the understanding of gross human muscular anatomy, with descriptions of the large muscle groups and their actions.
Human muscle system - Upper Limb Changes | Britannica
Dec 29, 2025 · Human muscle system - Upper Limb Changes: The human upper limb has retained an overall generalized structure, with its details adapted to upright existence.
Human muscle system - Evolution, Anatomy, Function | Britannica
Nov 24, 2025 · Human muscle system - Evolution, Anatomy, Function: The arrangement of striated muscle in modern humans conforms to the basic plan seen in all pronograde quadrupedal …
Human skeleton | Parts, Functions, Diagram, & Facts | Britannica
Dec 31, 2025 · Protection of the heart, lungs, and other organs and structures in the chest creates a problem somewhat different from that of the central nervous system. These organs, the function of …
Human body systems | Muscle, Skeletal, Respiratory, Circulatory ...
The muscle and skeletal systems, for example, act together to move the body. The skeletal system also protectively houses internal organs, such as the brain, heart, and lungs, while the muscle system …
Pectoralis muscle | Definition, Location, Function, & Facts | Britannica
It is enclosed by the ribs, the vertebral column, and the sternum, or breastbone, and is separated from the abdominal cavity (the body’s largest hollow space) by a muscular and membranous partition, the …