Cell Neuro (SI) Practice Exam 2 Questions

Adding what to Exp 2 reinforced the idea that voltage-gated Ca++ channels are responsible for neurotransmitter release?

What number of events are observed at the miniature endplate potential?

Which of the following types of transmission would be the fastest?

Injection of a current into cell A generates a depolarization of 20 mV and 4 mV in cell B. What is the coupling coeff?

Activation of AMPA receptors at the synapse:

If a synapse has a large number of gap junctions as well as little resistance, which of the following is true?

The AMPA and NMDA receptors are permeable to the same ions except NMDA is also permeable to:

How many quanta of neurotransmitter are released to produce an end plate potential that is 1.6 mV in amplitude?

Based on the graph, which direction is the membrane current at -20 mV?

The amplitude of the miniature endplate potential is:

The cell recorded has an RP of -65 and an AP threshold of -59. How many quanta of NT must be released to generate an AP?

Syntaxin is the protein that coats the internal surface of the plasma membrane to initiate endocytosis.

If sodium and potassium have no driving force (no arrow), then this means that they are at equilibrium potential.

Which of the following neurotransmitters is released at the NMJ (neuromuscular junction) synapse?

Which of the following is NOT an ionotropic receptor for glutamate?

GABA receptors are inhibitory and are responsible for all the following EXCEPT for:

Shunting inhibition allows for current to flow from the soma (cell body) to the axon hillock.

Based on the graph, which curve depicts the response of synapse with only NMDA receptors in the absence of Mg?

Chemical synaptic transmission occurs via:

Curare and atropine act by which mechanism on their respective receptors?

Which of the following is the major excitatory neurotransmitter in the PNS?

Based on the graph, which curve depicts the response generated by a synapse with only AMPA receptors?

Based on the graph, what is the reversal potential of this current?

Which of the following is a major excitatory neurotransmitter in the CNS?

The receptors activated by the neurotransmitter released at the NMJ (neuromuscular junction) are:

What is the main mechanism by which calcium enters the pre-synaptic neuron?

Based on the graph, which curve depicts the response generated by a synapse with only NMDA receptors?

Which of the following is a calcium-sensitive vesicle protein responsible for embedding itself into the plasma membrane?