músculi
Músculi, also known as muscles, are the contractile tissues of the body that are responsible for movement and posture. They are composed of muscle fibers, which are long, cylindrical cells that contain contractile proteins called actin and myosin. When a muscle contracts, these proteins slide past each other, causing the muscle to shorten. This process is controlled by the nervous system, which sends signals to the muscles to contract or relax.
Muscles can be classified into three main types based on their structure and function: skeletal, cardiac, and
Muscles play a crucial role in the body's overall health and well-being. They help maintain proper posture,