Exam 13: Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

You treat an organism with a drug that inhibits calcium permeability in nerve cells specifically.As a result,you expect to see

The kinesin ATPase is located within the ________ of a nerve cell.

Of all of the ions associated with generating the resting membrane potential,the permeability of the membrane to ________ is the most important. A)sodium ions B)potassium ions C)chloride ions D)all of the above E)none of the above

Under times of great stress or shock,which of the following neurotransmitters interferes with the perception of pain?

The glial cells associated with phagocytosis to fight infection and remove debris are the

Which of the following statements about action potentials is false?

Which of the following drugs interferes with the reuptake of neurotransmitters in order to have its desired clinical effect?

The technique that allows one to record ion currents passing through individual channels is known as

In the graph above,the point at which the potassium channels open is indicated by the letter

Visualize a neuromuscular junction.An impulse has been sent to the effectors (muscle cells)for a response.At rest,the endplate region has the following concentrations of sodium and potassium: [Na⁺in] = 10 mM,[Na⁺out] = 145 mM,[K⁺in] = 140 mM,and [K⁺out] = 5 mM.Remember that when acetylcholine binds to its receptors,a large opening of channels becomes permeable to both sodium and potassium.What is the membrane potential of the endplate region when stimulated by acetylcholine in this response?

Upon transmission of a nerve signal to a muscle cell,________ is released from the sarcoplasmic reticulum through a gated channel.

An action potential can always be initiated specifically at which of the following locations associated with a neuron?

Synaptic vesicles are synthesized in the nerve ________.

The maximum membrane potential that an ion gradient can produce is the

________ receptors act more slowly because they act in a(n)________ manner.

Which of the following statements is false regarding the nicotinic acetylcholine receptor?

The ________ receptor is a ligand-gated channel that carries chloride ions.

The axon branches of a typical neuron terminate at structures called

________ is a technique used to measure ion currents passing through individual channels along a nerve cell.