Meeting Abstract 5.7 Thursday, Jan. 3 The long and winding road: diffusion limitation in skeletal muscle KINSEY, S.T.*; HARDY, K.M.; LOCKE, B.R.; Univ. of North Carolina Wilmington; Univ. of North Carolina Wilmington; Florida State University kinseys@uncw.edu A fundamental principle of physiology is that cells are small in order to minimize diffusion distances for O2 and intracellular metabolites. […]
sessions: Session 5
Spring properties of muscle during active shortening and lengthening
Meeting Abstract 5.4 Thursday, Jan. 3 Spring properties of muscle during active shortening and lengthening MONROY, JA*; HOKANSON, J; NISHIKAWA, KC; Northern Arizona University; SUNY Cortland jenna.monroy@nau.edu When its load is reduced, an active muscle will recoil elastically to a shorter length. When its load increases, an active muscle will lengthen. In this study, we describe and […]
Slow-twitch oxidative muscle development in yellowfin tuna, Thunnus albacres
Meeting Abstract 5.1 Thursday, Jan. 3 Slow-twitch oxidative muscle development in yellowfin tuna, Thunnus albacres DICKSON, Juleen*; DICKSON, Kathryn; California State University Fullerton; California State University Fullerton jdickson@fullerton.edu The purpose of this study was to describe the development of slow-twitch, oxidative myotomal muscle (SM) in a size series of juvenile yellowfin tuna, Thunnus albacares. The SM powers […]
Parvalbumin’s ability to bind calcium in the face of varying environmental salinity in the Atlantic stingray, Dasyatis sabina
Meeting Abstract 5.10 Thursday, Jan. 3 Parvalbumin’s ability to bind calcium in the face of varying environmental salinity in the Atlantic stingray, Dasyatis sabina HEFFRON, Jennifer K.*; MOERLAND, Timothy S.; Florida State University; Florida State University heffron@bio.fsu.edu The Atlantic stingray, Dasyatis sabina, is a euryhaline species that migrates back and forth between freshwater and the marine environment. […]
Neuromuscular control of mechanical power output in hummingbirds II Measurements of muscle work and power
Meeting Abstract 5.3 Thursday, Jan. 3 Neuromuscular control of mechanical power output in hummingbirds II: Measurements of muscle work and power. WELCH, KC*; JOSEPHSON, RK; ALTSHULER, DL; Univ. of California, Riverside; Univ. of California, Irvine; Univ. of California, Riverside kenwelch@ucr.edu Hummingbird flight muscles are predicted to have the highest mass-specific mechanical power requirements of any vertebrate muscle. […]
More boing for your buck spring properties of muscle at and beyond optimal length
Meeting Abstract 5.5 Thursday, Jan. 3 More boing for your buck: spring properties of muscle at and beyond optimal length. GILMORE, L.A.*; MONROY, J.A.; HOKANSON, J.; NISHIKAWA, K.C.; Northern Arizona University; Northern Arizona University; SUNY, Cortland; Northern Arizona University Leslie.Gilmore@nau.edu A muscle produces maximal force when activated at its optimal length. If the muscle is rapidly unloaded […]
Intracellular diffusion constraints may influence organelle distribution in skeletal muscle
Meeting Abstract 5.8 Thursday, Jan. 3 Intracellular diffusion constraints may influence organelle distribution in skeletal muscle HARDY, KM*; DILLAMAN, RM; KINSEY, ST; University of North Carolina Wilmington; University of North Carolina Wilmington; University of North Carolina Wilmington kmh6265@uncw.edu Different organelles require different conditions to function inside of a cell. Mitochondria depend on oxygen flux, and produce small, […]
Expression of fatty acid uptake proteins in muscle tissue of white-throated sparrows (Zonotrichia albicollis) increases during migratory seasons
Meeting Abstract 5.11 Thursday, Jan. 3 Expression of fatty acid uptake proteins in muscle tissue of white-throated sparrows (Zonotrichia albicollis) increases during migratory seasons. MCFARLAN, Jay T*; BONEN, Arend; GUGLIELMO, Christopher G; Univ. of Guelph, Guelph; Univ. of Guelph, Guelph; Univ. of Western Ontario, London mcfarlan@uoguelph.ca Migratory birds are a unique model system to study lipid metabolism […]
Effects of muscle phospholipids and adipose lipids on exercise performance in birds
Meeting Abstract 5.9 Thursday, Jan. 3 Effects of muscle phospholipids and adipose lipids on exercise performance in birds PRICE, Edwin R.*; GUGLIELMO, Christopher C.; University of Western Ontario; University of Western Ontario eprice3@uwo.ca Recent work has shown that exercise performance can be affected by dietary fatty acid composition. Our research has focused on the two major mechanisms […]
Contrasting Patterns of Masticatory Myosin Expression in Carnivora and Primates
Meeting Abstract 5.6 Thursday, Jan. 3 Contrasting Patterns of Masticatory Myosin Expression in Carnivora and Primates REISER, PJ*; BICER, S; GLENDING, C; Ohio State University; Ohio State University; Ohio State University reiser.17@osu.edu Masticatory (�superfast�) myosin heavy chain (MHC-mast) is expressed in jaw-closing muscles of members of several classes – Chondrichthyes (e.g., sharks), Reptilia (e.g., caimans, crocodiles, terrapins), […]
