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NAME: ___KEY_________________ PER. _______Body Systems Project: Muscular System Teen Health Book Page 3721. Major functions of the muscular system – The muscular system consists of various types of muscle that each play a crucial role in the function of the body.Muscles allow a person to move, speak, and chew. They control heartbeat, breathing, and digestion. Other seemingly unrelated functions, including temperature regulation and vision, also rely on the muscular system.2. Describe the function and locations of each type of muscle: Skeletal muscle - Skeletal muscles are the only muscles that can be consciously controlled. They are attached to bones, and contracting the muscles causes movement of those bones. Any action that a person consciously undertakes involves the use of skeletal muscles. Examples of such activities include running, chewing, and writing. Smooth muscle - lines the inside of blood vessels and organs, such as the stomach, and is also known as visceral muscle. It is the weakest type of muscle but has an essential role in moving food along the digestive tract and maintaining blood circulation through the blood vessels.Smooth muscle acts involuntarily and cannot be consciously controlled.Cardiac muscle - Located only in the heart, cardiac muscle pumps blood around the body. Cardiac muscle stimulates its own contractions that form our heartbeat. Signals from the nervous system control the rate of contraction. This type of muscle is strong and acts involuntarily.3. Describe how muscles work in pairs to make parts of the body move using the biceps and triceps as an example.When one muscle is contracted, the other muscle from the pair is always elongated. For example, the biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes.4. Explain how your muscular system works with other systems in the body. You will need at least 2 examples. The muscular system moves the body. One system that interacts with the muscular system is the skeletal system. ... Impulses from the nervous system go to the brain, and the brain tells the muscles to move the bones. Another system involved with the muscular system is the circulatory system.5. Find 5 fun facts about your body system.Muscles make up approximately 40 percent of total weight.The heart is the hardest-working muscle in the body. ... The gluteus maximus is the body's largest muscle. ... The ear contains the smallest muscles in the body alongside the smallest bones.A muscle called the masseter in the jaw is the strongest muscle by weight. It allows the teeth to close with a force of up to 55 pounds on the incisors or 200 pounds on the molars.6. Describe 2 diseases associated with your muscular system.Diseases and disorders of the muscular system include muscular dystrophy (muscle weakening diseases), tendinosis (degenerative tendon disease), fibromyalgia (chronic pain), mitochondrial myopathy (mitochondria ATP disorder), myasthenia gravis (immune system problem), and tetanus (paralyzing bacterial infection). ................
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