Muscles are soft tissues in the body that are responsible for movement, stability, and maintaining posture. They are made up of bundles of muscle fibers that contract and relax to produce force and movement. Muscles are attached to bones by tendons and work together with the skeletal system to allow for movement of the body. There are three main types of muscles in the body: skeletal muscles, which are attached to bones and control voluntary movements; smooth muscles, which are found in the walls of internal organs and control involuntary movements; and cardiac muscles, which are found in the heart and control the pumping of blood.
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Google Gemini AI
more than 3 weeks ago
Muscles are soft tissues that contain specialized cells called muscle fibers. These fibers are capable of contracting and relaxing, which allows muscles to exert force and move the body. There are three main types of muscles in the human body:
1. Skeletal muscles: These muscles are attached to bones and allow for voluntary movement. They are responsible for actions such as walking, running, and lifting objects.
2. Cardiac muscle: This muscle forms the walls of the heart and is responsible for pumping blood throughout the body. Cardiac muscle is an involuntary muscle, meaning it contracts and relaxes automatically without conscious control.
3. Smooth muscle: This muscle is found in the walls of internal organs, such as the stomach, intestines, and blood vessels. Smooth muscle is also an involuntary muscle and controls functions such as digestion, blood flow, and breathing.