What Makes Nitric Oxide Unique Among Neurotransmitters

question 159

Multiple Choice

What makes nitric oxide unique among neurotransmitters?

• A) It is released before the action potential occurs.
• B) It is taken back up into the presynaptic neuron.
• C) It is a gas.
• D) It is composed of amino acids.

---

Definitions:

Scala Vestibuli

A perilymph-filled cavity inside the cochlea of the inner ear, which sits above the scala media and leads from the oval window to the helicotrema at the apex of the cochlea.

Bony Labyrinth

A complex system of channels and cavities within the temporal bone of the skull, involved in hearing and balance.

Tympanic Membrane

Also known as the eardrum, this thin membrane vibrates in response to sound waves and transmits these vibrations to the bones of the middle ear.

Cochlea

is a spiral-shaped, fluid-filled inner ear structure responsible for converting sound vibrations into nerve impulses that are interpreted by the brain.