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A muscle fiber is itself a burdle of smaller myofibrils arranged longitudinally The
myofibrils, in turn, are composed of two kinds of myofilaments: thin filaments and
thick filaments. Thin filaments consist of two strands of actin and one strand of.
In a muscle fiber at rest, thick and thin filarrents do not overlap completely, and
the area near the edge of the sarcomere where there are only thin filaments 's
called the I band. The A band is the broad region that corresponds to the length
jg I ,__ extend completely across the sarcomere, so the H zone in tre center of the
A band contains on y thick filaments. This arrangemerit of thick and thin filaments
is tre key to how the sarcomere, ard hence the whole muscle, coritracts. é _ ...
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LibraryThing ReviewUser Review - kaionvin - LibraryThing
I wasn't going to review Biology by Neil A. Campbell, because well... 1. It's ubiquitous. 2. I studied from the sixth edition in high school for Biology AP and the eighth edition for first-year ... Read full review
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This is a fabulous book. It also came with access to a free digital copy of the book, which was very handy. Read full review