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Fiber Arrangement and Micro‐Structure of Bovine Longissimus Dorsi Muscle
Author(s) -
EISENHUT R. C.,
CASSENS R. G.,
BRAY R. W.,
BRISKEY E. J.
Publication year - 1965
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1965.tb01870.x
Subject(s) - sarcomere , anatomy , longissimus dorsi , muscle fibre , transverse plane , fiber , longissimus , apex (geometry) , marbled meat , materials science , chemistry , biology , composite material , skeletal muscle , myocyte , zoology , endocrinology , food science
SUMMARY An experiment was conducted to establish the fiber arrangement and micro‐structure at three sites in the longissimus dorsi of horizontally placed and vertically suspended bovine carcass sides. Fiber angles, from transverse processes, increased markedly from anterior to posterior positions. Conversely, the fiber angles, from the spinous processes, decreased from anterior to posterior positions. In comparison with horizontal placement, vertical suspension released some of the tension on the longissimus dorsi and allowed rearrangement of its internal construction. This rearrange. ment was noted by larger angles, from both the transverse and spinous processes, and shorter sarcomeres in the vertically suspended than in the horizontally placed sides. Differences were also observed in muscle shape and marbling coarseness.