Is skeletal muscle a tissue or an organ?

I believe many people are familiar with the part of the human body that is skeletal muscle. This part belongs to the muscle tissue of the human body. The most important component of a complete skeletal muscle is muscle tissue. In addition to skeletal muscle, it also contains tendon connective tissue. However, many people think that skeletal muscle is an organ of the human body. So what is it like? Is skeletal muscle a tissue or an organ?

First, is skeletal muscle a tissue or an organ? Each muscle is a complex organ. The main components of the muscle organ are skeletal muscle fibers (each muscle fiber is a muscle cell). In addition, there are connective tissue, blood vessels, lymph and nerves. Skeletal muscle fibers are arranged in a certain direction to form the muscle belly. The connective tissue on the outer surface of the entire muscle forms the epimysium. The epimysium extends inward to divide the muscle fibers into muscle bundles of different sizes, called perimysium. The perimysium extends inward and wraps around each muscle fiber, called endomysium. The fascia is the supporting and nutritional tissue of the muscles, giving the muscles a certain shape. The fascia of well-nourished livestock contains fat, and the cross-section of the muscle has a marble-like pattern. Blood vessels, nerves, and lymphatic vessels enter the muscle tissue along the fascia. The two ends of the muscle are generally composed of dense connective tissue called tendons. The tendons cannot contract but have strong toughness and resistance to tension. Tendons firmly attach muscles to bones.

Second, skeletal muscle belongs to muscle tissue. A complete piece of skeletal muscle is mainly composed of muscle tissue, but in addition to skeletal muscle, it also contains tendons (connective tissue). Muscles also contain nerve tissue, blood vessels (the inner surface of blood vessels is epithelial tissue), etc. Therefore, a complete piece of skeletal muscle has the four basic tissues of the human body. Therefore, a complete piece of skeletal muscle belongs to an organ.

Is skeletal muscle a tissue or an organ? [Tissue] A group of cells and intercellular matrix with similar morphology and function is called tissue. The tissues of the human body are divided into four types: epithelial tissue, connective tissue, nervous tissue and muscle tissue. Tissues are the basic components of organs. [Organ] The above four types of tissues are arranged and combined to form a structure with a certain shape and perform certain physiological functions, which is called an organ, such as the stomach and intestines. Skeletal muscle is a type of muscle tissue. At the same time, in a broad sense, a complete skeletal muscle contains the above four tissues, which can complete the physiological function of contraction and relaxation, and can also be said to be an organ.