Which of the Following Is True of Ion Distribution Across

question 5

Multiple Choice

Which of the following is true of ion distribution across the axon membrane?

• A) Sodium ions are concentrated outside the axon membrane.
• B) Potassium ions are concentrated outside the axon membrane.
• C) The action potential is the balance point between diffusion and electrostatic pressure.
• D) Chloride ions are concentrated inside the axon membrane.
• E) Sodium ions are concentrated inside the axon membrane.

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Definitions:

Attenuation Reflex

The reflex mechanism that protects the inner ear from damage by reducing the transmission of sound, particularly for loud sounds, through the contraction of muscles around the ossicles.

Scala Vestibuli

A fluid-filled chamber in the cochlea of the inner ear; it lies above the scala media and begins near the oval window.

Scala Tympani

A spiral-shaped canal in the inner ear that forms part of the cochlear duct, important for the transmission of sound vibrations.

Tectorial Membrane

The tectorial membrane is a structure in the inner ear of mammals that plays a crucial role in the hearing process by interacting with the hair cells of the organ of Corti.