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Sarcomere Anatomy

Name the thin myofilament. actin
Name the thick myofilament. myosin
Name the contractile unit of muscle. sarcomere
These designate the boundaries of a sarcomere. They are always found within an I band. Z line
Name the band of the sarcomere that contains only actin. The Z line lines within this band. I band
Name the band of a sarcomere that contains both actin and myosin. A band
Name the band that always appears dArker. A band
Name the band that always appears lIghter. I band
Name the area that contains only myosin; it's in the middle of the A band. H zone/band
Why does a myofiber appear striated? Due to the alternating A and I bands
Created by: smonahan