1.a sensory neuron that briefly fires when stimulus change, but not when a stimu

Question

1.a sensory neuron that briefly fires when stimulus change, but not when a stimulus is maintain is a(n) ________ sensory neuron.

2. when a ligand (typically described as a neurotransmitter) binds to a(n)_____sensory neuron.

3. (hoerculano-Houzel presented datat for two groups of mammals: rodents and primates. would you predict that the scaling rules (that is, how brains change as they get bigger) for brains of reptiles (non-mammalian vertebrates) would be similar to rodents, primates, or different again? and why

Explanation / Answer

1. motor neurons

2. receptor

Once the neurotransmitter is in the synapse, several events may occur. It may (1) diffuse across the synapse and bind to a receptor on the postsynaptic membrane, (2) diffuse back to the presynaptic neuron and bind to a presynaptic receptor causing modulation of neurotransmitter release, (3) be chemically altered by an enzyme in the synapse, or (4) be transported into a nearby cell. For the chemical message to be passed to another cell, however, the neurotransmitter must bind to its protein receptor on the postsynaptic side. The binding of a neurotransmitter to its receptor is a key event in the action of all neurotransmitters.

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