Which Statement Is True of Most Arthropod and Vertebrate Skeletal

question 55

Multiple Choice

Which statement is true of most arthropod and vertebrate skeletal muscle?

• A) Muscle fibers are innervated by multiple neurons.
• B) Muscle fibers receive both EPSPs and IPSPs.
• C) Different myosin isoforms in adjacent fibers produce different maximum shortening velocities.
• D) Ca²⁺ is released from the sarcoplasmic reticulum in response to depolarization of the fiber.

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Definitions:

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Bystander Effect

The social psychological phenomenon where people are less likely to help a victim when other people are present.

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