The Observation That the Acetylcholine Released into the Junction Between

question 32

Multiple Choice

The observation that the acetylcholine released into the junction between a motor neuron and a skeletal muscle binds to a sodium channel and opens it is an example of

• A) a voltage-gated sodium channel.
• B) a voltage-gated potassium channel.
• C) a ligand-gated sodium channel.
• D) a second-messenger-gated sodium channel.
• E) a chemical that inhibits action potentials.

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Definitions:

Spinothalamic Pathway

A sensory pathway of the spinal cord that transmits pain and temperature sensations to the brain.

Decussation

The crossing over of nerve fibers or pathways from one side of the brain or spinal cord to the other, allowing for the exchange of information.

Fasciculus Gracilis Tract

A sensory pathway in the spinal cord responsible for transmitting touch and proprioception information from the lower body.

Anterior Spinocerebellar Pathway

A neural pathway that carries sensory information from the spinal cord to the cerebellum, important for the coordination of movement.