A whole skeletal muscle is considered an organ of the muscular system.Each organ or muscle consists of skeletal muscle tissue, connective tissue, nerve tissue, and blood or vascular tissue.. Skeletal muscles vary considerably in size, shape, and arrangement of fibers. There are three types of muscles: Smooth muscle or "involuntary muscle" consists of spindle shaped muscle cells found within the walls of organs and structures such as the esophagus, stomach, intestines, bronchi, uterus, ureters, bladder, and blood vessels. We just talked about the contraction of a muscle cell. Combine those protein threads with some ions in the muscle cell and you get a huge contraction. Researchers grow stem cells in a lab. Muscle Memory When we practice an action over and over again, we get what is called muscle memory. A muscle consists of fibers of muscle cells surrounded by protective tissue, bundled together many more fibers, all surrounded in a thick protective tissue.A muscle uses ATP to contract and shorten, producing a force on the objects it is connected to. Contraction of muscles is due to the movement of microfilaments 3. These stem cells are manipulated to specialize into specific types of cells, such as heart muscle cells, blood cells or nerve cells. Smooth muscle cells contain only one nucleus and no striations. The arrangement of protein fibers inside of the cells causes these light and dark bands. Muscle cells are elongated 2. The sarcolemma forms a physical barrier against the external environment and also mediates signals between the exterior and the muscle cell. When attached between two movable objects, such as two bones, contraction of the muscles cause the bones to move. Types []. Tendons connect muscles to bones. This branch (telodendron) forms a neuromuscular junction (NMJ) with the muscle cell membrane (sarcolemma), Impulses arriving on the nerve fiber are transmitted to the sarcolemma and ultimately cause the contraction of the muscle fiber. Muscle cells are excitable; they respond to a stimulus. Some muscle movement is voluntary, which means it is under conscious control. Muscle cells are long, cylindrical structures that are bound by a plasma membrane (the sarcolemma) and an overlying basal lamina and when grouped into bundles (fascicles) they make up muscle. A muscle cell is a special kind of cell that makes up an organism's muscle tissues. It allows us to become more skilled at … Skeletal muscle tissue is composed of cells called muscle fibers. The muscles allow independent movement and regulate biological functions such as digestion and heartbeat. All of the muscle cells work together to make a muscle contract. Mitochondria convert chemical energy from the food we eat into an energy form that the cell can use. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron. A Role in Cell Movement Cells move in a variety of ways. Tendons help form a connection between soft contracting muscle cells to hard bone cells. Cardiac muscle is also an "involuntary muscle" but … 1. All muscles share some terminology: myo-, mys- ("muscle"), sarco- ("flesh") Ex: sarcoplasm - in muscle cells the cytoplasm is called thiss The Krebs cycle produces a chemical called NADH. A muscle is a group of muscle tissues which contract together to produce a force. The cells of cardiac muscle tissue are striated—that is, they appear to have light and dark stripes when viewed under a light microscope. These cells are further specialized into distinct types based on their location and functions. The specialized cells can then be implanted into a person. 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