Acetylcholine

question 58

Multiple Choice

Acetylcholine

• A) opens voltage-gated Na⁺ channels in skeletal muscle fibers, which causes depolarization of the muscle fibers
• B) may decrease the permeability of the motor end plate to Na⁺ and K⁺ when combined with the receptor sites on the motor end plate
• C) always depolarizes skeletal muscle fibers and postganglionic neurons
• D) opens voltage-gated Na⁺ channels in skeletal muscle fibers, which causes depolarization of the muscle fibers, and always depolarizes skeletal muscle fibers and postganglionic neurons
• E) all of these

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Understand the legal frameworks for addressing copyright infringement.

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Definitions:

Polysaccharide

Carbohydrate that consists of hundreds or thousands of monosaccharide monomers.

Molecule

The smallest particle of a chemical element or compound that can exist independently while retaining the characteristics of the substance.

Cellulose

A complex carbohydrate that constitutes the primary structural component of plant cell walls and is indigestible to humans.

Plant Cuticles

A protective, waxy coating on the surface of stems and leaves that prevents water loss.