The Arrival of an Action Potential at the Axon Terminal

question 79

Multiple Choice

 The arrival of an action potential at the axon terminal results in the opening of

• A) voltage-dependent magnesium channels.
• B) ligand-gated magnesium channels.
• C) voltage-dependent calcium channels.
• D) ligand-gated calcium channels.

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Definitions:

Organ of Corti

A structure in the cochlea of the inner ear that produces nerve impulses in response to sound vibrations.

Kinocilium

A specialized type of cilium on the apical surface of hair cells in the sensory epithelium of the vertebrate inner ear, crucial for the detection of sound and movement.

Basilar Membrane

A structure in the cochlea of the inner ear that supports the organ of Corti, playing a critical role in sound perception.

Cilia

Microscopic, hair-like structures on the surface of cells that move in a wave-like manner to propel substances.