Exam 8: Synaptic Transmission and Neural Integration

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.

Which of the following neurotransmitters is a catecholamine?

Nitric oxide is a(n)that functions as a neurotransmitter.

If the equilibrium potential of a cation is - 40 mV, then opening of channels for this cation will result in excitation of the neuron.

Which adrenergic receptor(s)has the greatest affinity for norepinephrine?

In the absence of active transport of chloride, membrane potential will determine the concentration of chloride ions across a neuron's plasma membrane.

As the amplitude of the excitatory postsynaptic potential increases above threshold, the time between each action potential will , thereby increasing the of the action potentials.

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

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

Catecholamines are an important class of neurotransmitter. Describe the receptors involved in responding to catecholamines and how they are degraded.

Describe the process of neural integration in neurons, with particular emphasis on summation and how action potentials are generated within neurons.

If the resting membrane potential is equal to chloride's equilibrium potential, in which direction will chloride ions move if chloride channels open while the cell remains at resting membrane potential?

All of the following receptor sub- types are metabotropic, EXCEPT

Presynaptic modulation occurs at axosomatic synapses.

What is transported back into the axon terminal of cholinergic neurons to be resynthesized into active neurotransmitter?

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

Which enzyme catalyzes the synthesis of cAMP?

What enzyme catalyzes breakdown of catecholamines in the synaptic cleft and in the mitochondria of the axon terminal of the presynaptic cell?

The most common mechanism for producing a fast EPSP involves which of the following?

The chemical synapse is bounded by the neuron, from which neurotransmitters are released across the synaptic cleft, to the neuron, where the receptors for that neurotransmitter are located.