One size does not fit all: diversity of length-force properties of obliquely striated muscles.

ABSTRACT: Obliquely striated muscles occur in 17+ phyla, likely evolving repeatedly, yet the implications of oblique striation for muscle function are unknown. Contrary to the belief that oblique striation allows high force output over extraordinary length ranges (i.e. superelongation), recent work suggests diversity in operating length ranges and length-force relationships. We hypothesize oblique striation evolved to increase length-force relationship flexibility. We predict that superelongation is not a general characteristic of obliquely striated muscles and instead that length-force relationships vary with operating length range. To test these predictions, we measured length-force relationships of five obliquely striated muscles from inshore longfin squid, Doryteuthis pealeii: tentacle, funnel r

SUBMITTER: Thompson JT 

PROVIDER: S-EPMC10658899 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature