so they can protect the body
by doglover
muscle tissue
muscle cells
Muscle tissue is composed of elongated cells called muscle fibers or myocytes, which are specialized for contraction. These fibers contain contractile proteins, primarily actin and myosin, organized into structures known as sarcomeres. Muscle tissue can be classified into three types: skeletal, cardiac, and smooth, each with distinct structures and functions. The long, thin shape of these cells allows for efficient contraction and movement.
muscle fibers
The muscle system made up of cells that are long, thin, and pointed is the cardiac muscle system. Cardiac muscle cells are unique in structure and function, as they are found in the heart and have a branching, interconnected appearance. These cells contract rhythmically to pump blood throughout the body.
A muscle is made up of many fasicles. These fasicles contain myofibrils. The myofibrils contain sarcomeres which contain myosin and actin filaments which is the molecular movement for muscle contraction.
Skeletal muscle cells are very thin, and lean. They are designed for contraction and expansion.
Skeletal muscle cells are much bigger than cardiac muscle cells. Skeletal muscle fibres are up to 100 micrometers in diameter and several centimeters long while cardiac myocytes are about 15 micrometers in diameter and about 100 micrometers long.
muscle cells...
thick and thin bands (lines) of filaments.
The long thin process that carries impulses away from the cell body is called an axon. Axons are part of nerve cells (neurons) and transmit electrical signals to other neurons or muscle cells.
Actin is the protein that forms the contractile thin filaments of muscle cells in the human body. It plays a key role in muscle contraction by interacting with myosin to generate the force required for muscle movement.