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Introduction:
Muscle is very soft tissue ad is found in most animals. The protein filaments found in muscles are actin and myosin filaments. These filaments slide over each other to produce muscular contraction. Three types of muscles in body are, smooth, skeletal, and cardiac muscle.
Explanation of Solution
Smooth muscle − It is a type of muscle tissue that is made of smooth muscle cells. Smooth muscle is found in hollow organs like intestines and stomach.
Involuntary muscle − The autonomic nervous system controls the contractions of involuntary muscles. Cardiac muscles, and smooth muscles constitute the involuntary muscles.
Cardiac muscle − Cardiac muscle is also termed as heart muscle. It is a striated and involuntary muscle and forms the main muscles in the heart.
Skeletal muscle − It is a striated muscle and is under voluntary control. It is controlled by somatic nervous system. These muscles are attached to bones and help them move.
Voluntary muscle − This muscle moves only when one wants it to move. This muscle type helps the person to move.
Tendon − It is a tough fibrous connective tissue. It connects bones to muscles and can withstand tension easily.
Myofibril − It is the unit of muscle cell. Muscle is constituted of myocytes, known as muscle fiber in striated muscle. Myocytes contain various chains formed of myofibrils.
Myosin − It is a motor protein that plays role in muscle contraction. Myosin filaments are ATP dependent.
Actin − It is protein filament and is found in all eukaryotes. These filaments help in providing structure, shape, and motility to animal body.
Sarcomere − It is the unit of striated muscle tissue. It is the repeating unit found between Z lines.
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