What Is Responsible for the Phenomenon in Skeletal Muscle Known

question 41

Multiple Choice

What is responsible for the phenomenon in skeletal muscle known as muscle tone?

• A) the passive elastic properties of muscles and joints and some degree of alpha motor neuron activity
• B) spontaneous entry of calcium into the cytosol and the background phosphorylation of cross-bridges
• C) depletion of ATP in some individual muscle fibers, and the inability for cross-bridges to detach
• D) cross-bridges that continuously cycle, even in the absence of cytosolic Ca²⁺
• E) a buildup of K⁺ in the T-tubules and resulting depolarization of the sarcolemma

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Definitions:

Hypothesis

An assumption made before any research has been conducted for the purpose of testing.

Critical Value

A point on a statistical distribution that represents a threshold at which the null hypothesis is either rejected or not rejected.

Hypothesis Test

A statistical method that uses sample data to evaluate a hypothesis about the properties of a population.

Commuted

Refers to the action of commuting, which is traveling from one's home to work or school, or it can refer to changing a legal penalty to a less severe one.