What Does the Depolarization of the Transverse Tubules (T ^-tubules)

question 76

Multiple Choice

What does the depolarization of the transverse tubules (T ^-tubules) promote?

• A) release of acetylcholine from vesicles in the motor neuron into the synaptic cleft
• B) binding of acetylcholine to ligand ^-gated sodium ion channels
• C) entry of sodium ions into the muscle fiber through voltage ^-gated sodium ion channels
• D) release of calcium from the sarcoplasmic reticulum

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Definitions:

Variable Cost

Costs that vary directly with the level of output or production volume, such as materials and labor expenses.

Average Variable Cost

The total variable costs incurred by a firm divided by the quantity of output produced.

Marginal Cost

The extra cost resulting from the manufacture of an additional unit of a product or service.

Average Fixed Cost

The total fixed costs of production divided by the quantity of output produced, indicating how fixed costs dilute with increased production.