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Title: A gastrocnemius muscle at optimal length, when maximally stimulated by a single Post by: rab376 on Oct 17, 2014 A gastrocnemius muscle at optimal length, when maximally stimulated by a single electrical stimulus, produces an isometric twitch tension of 80kg, and consumes 5 joules of energy above its basal energy consumption (measured by a calorimeter—includes all the energy used by the muscle as a result of that stimulus).If you then stretch the muscle (hyper-extend it) so that the same maximal electrical stimulus produces no twitch tension at all, stimulating the muscle raises its energy consumption by only 1 Joule above its basal energy consumption (measured again with the calorimeter).
a. The 5 Joules of energy consumed by the muscle during a maximal stimulus at optimal length were used for what? BE SPECIFIC b. The 1 Joule of energy consumed by the muscle during a maximal stimulus at hyperextended length was used for what? BE SPECIFIC c. Explain the difference in amplitude of the twitch tension between optimal length and hyper-extended length. BE SPECIFIC |