ANATOMY

Detailed explanation-1: -Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.

Detailed explanation-2: -Voluntary muscles are skeletal muscles that attach to bones and can be consciously activated to control movement. Common voluntary skeletal muscles include the biceps, triceps, lats, abdominals, glutes, quadriceps, and hamstrings. Why do voluntary muscles work in pairs?

Detailed explanation-3: -Muscle tissue can be categorized into skeletal muscle tissue, smooth muscle tissue, and cardiac muscle tissue. Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control. Smooth muscle cells are spindle shaped, have a single, centrally located nucleus, and lack striations.

Detailed explanation-4: -In the body, there are three types of muscle: skeletal (striated), smooth, and cardiac.

Detailed explanation-5: -Cardiac muscle and smooth muscle that line the internal organs like the intestinal tract, blood vessels, urogenital tract, respiratory tract, etc. are involuntary muscles.