Exam 8: Synaptic Transmission and Neural Integration

-What is occurring in Step 2 of Figure 8.1, and how is that process originated?

The action of adrenergic receptors identifies them as________receptors.

Axoaxonic synapses are responsible for_________the extent of neurotransmitter released at the synapse.

When one neuron has several axon collaterals that communicate with several other neurons, it is called divergence.

What happens to the resting membrane potential of -70 mV when channels for a cation with an equilibrium potential of -80 mV open?

EPSPs are at least 10 mV in magnitude at the point of synaptic communication.

Once initiated, excitatory postsynaptic potentials last for hours, especially if a fast receptor is activated.

During presynaptic inhibition, the release of a neurotransmitter from the modulating neuron causes which of the following?

Adenosine is degraded by nucleotidases.

_______is an amino acid neurotransmitter at excitatory synapses whereas ________ Is an amino Acid neurotransmitter at inhibitory synapses.

Neurotransmitters can be reused through the process of _______, where neurotransmitters are transported back across the presynaptic membrane.

What happens to the resting membrane potential of -70 mV when potassium channels open?

A neuron actively transports chloride ions out of the cell. Opening of chloride channels in response to a neurotransmitter binding to receptors on this neuron will produce an IPSP thereby (exciting / inhibiting) the neuron.

If a membrane is depolarized to +10 mV, which cation will move more frequently through a small cation channel?

A number of modified epithelial cells, acting as sensory receptors, innervate a single neuron. Some of these cells release excitatory neurotransmitters, while others release inhibitory neurotransmitters. How are these responses integrated by the neuron to determine whether an action potential will be generated or not?

What happens to the resting membrane potential of -70 mV when sodium channels open?

The extent of neurotransmitter binding to receptors on the postsynaptic membrane is determined primarily by which of the following?

Information travels through the nervous system along the axons as action potentials. These action potentials must be transmitted across the synaptic cleft. Describe the process whereby an action potential that has entered the axon terminal is able to induce a change in membrane potential in the postsynaptic membrane, following neurotransmitter binding to a metabotropic receptor.

The final integration of postsynaptic potentials that determines whether an action potential is generated occurs within what region of a neuron?

Which of the following neurotransmitters is a biogenic amine, but not a catecholamine?