Which of the following occurs during a muscle contraction ? The distance between the z-discs lengthens The...

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Medical Sciences

Which of the following occurs during a muscle contraction ?
The distance between the z-discs lengthens
The A band shortens
The I band and the A band switch positions
thick and thin myofillaments shorten
The sarcomeres shorten
Jogging, swimming, and aerobics all have this effect on skeletalmuscle tissue.
Decreased # of myofillaments
Increased # of nuclei per muscle cell
Increased # of motor units
None of the above
Increased # of muscle fibers
In the sliding filament model, stay in place and are pulled toward the center of the
sarcomere.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Z bands, A bands
thin filaments, thick filaments
muscle cells, myofibrils
fast fibers, slow fibers
myosin filaments, actin filaments

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4.0 Ratings (538 Votes)

1CORRECT ANSWER IS OPTION E SARCOMERE SHORTEN Sarcomere are the basic functional unit of muscle Sarcomere are mainly composed of Actin filament and myosin filament They are the main protein that help in teh muscle contraction Sarcomere is teh art present between 2 Zline it is composed of a myosin filament and 2 half of actin filament when the See Answer

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		The distance between the z-discs lengthens
		The A band shortens
		The I band and the A band switch positions
		thick and thin myofillaments shorten
		The sarcomeres shorten

		Decreased # of myofillaments
		Increased # of nuclei per muscle cell
		Increased # of motor units
		None of the above
		Increased # of muscle fibers

		Z bands, A bands
		thin filaments, thick filaments
		muscle cells, myofibrils
		fast fibers, slow fibers
		myosin filaments, actin filaments