T1 L14: Physiology of Neurons: Electrochemical properties and communication. (HJW)

Which of the following is responsible for the resting membrane potential in neurons?

Which of the following is responsible for depolarization during an action potential?

Which of the following is responsible for the threshold voltage in an action potential?

Which of the following is responsible for repolarization during an action potential?

According to the text, what is the conduction velocity for an alpha motor neuron?

According to the text, what is the conduction velocity for C fibers responsible for pain?

According to the text, what are the structural differences between alpha motor neurons and C fibers that contribute to the difference in their conduction velocity?

According to the text, why do neurons with a larger cross-sectional diameter conduct faster?

Which of the following is true about the resting membrane potential (RMP) if extracellular Na+ concentration increases?

What happens to the RMP if extracellular K+ concentration suddenly increases?

Which of the following is NOT a characteristic of action potentials?

Why do axons need action potentials instead of graded potentials to propagate signals long distances?

Which of the following is true about selective serotonin reuptake inhibitors (SSRIs)?

What would happen if the membrane suddenly became 100 times more permeable to Cl¯ ions than to any other ion?

What is the effect of sodium channel inactivation on sodium channel activity during the after-hyperpolarization phase of the action potential?

How do neurons encode the intensity of a signal?

Which ion's current is half blocked in the presence of this drug?

What happens to the resting membrane potential (RMP) when the K+ current is half blocked?

What effect does doubling the Na/K pump activity have on the RMP?

By how much does the membrane potential hyperpolarize due to the electrogenic effects of the Na/K pump?

What effect does the drug have on the delayed rectifiers?

What happens to the duration of the action potential when the delayed rectifiers are half blocked?

Which of the following statements is true about the delayed rectifier K+ channels?

Which of the following can initiate a subthreshold stimulus in a neuron that might lead to an action potential?

Why does the membrane potential (Vm) become more negative than the resting membrane potential (RMP) during the after-hyperpolarization (AHP)?

What would be the equilibrium potential for the nicotinic acetylcholine receptor (nAChR) if it is equally permeable to Na+ and K+?

Which of the following is responsible for the afterhyperpolarisation (AHP) phase of the action potential?

What is the main transmembrane force acting on an ion during an action potential?

What is the equilibrium potential for Na+ in a typical cell?

Why is the resting membrane potential -70 mV despite the presence of positive K+ ions inside the cell?

Which ion is responsible for the resting membrane potential of -70 mV in a typical cell?

What is the main transmembrane force acting on an ion at its equilibrium potential?

Which drug class blocks sodium channels as part of their mechanism of action?

What is the refractory period following an action potential?

What is the purpose of the nervous system?

What is the central nervous system responsible for?

What is the peripheral nervous system responsible for?

Which part of the neuron is responsible for increasing conduction velocity?

What is the main function of the pyramidal cell in the neocortex?

Which type of neuron is responsible for coordination in the cerebellum?

What is the structure that contains the cell bodies of dorsal root ganglion cells?

Which cells are able to divide throughout the lifespan and maintain neurons?

Which area of the brain is most rostral in the cerebral cortex?

Which Broadman area corresponds to the sensory cortex?

What is the main difference between neurons and glia?

Which part of the neuron is primarily responsible for sensing and transmitting information?

What is the purpose of the myelin sheath in neurons?

What are the nodes of Ranvier in relation to the myelin sheath?

What is the function of the axon terminals in a neuron?

Which type of neuron is among the least numerous in the nervous system?

What is the main characteristic of pseudo unipolar cells?

What is the key feature of chemical synapses?

What happens in divergent signaling?

Which cells are more abundant in the nervous system compared to neurons?

What is the function of glial cells?

What is another name for glial cells?

What can be observed in the background of the image shown in the text?

What do glial cells do in relation to blood vessels?

Which cells are shown as big cells in the image?

What is the main function of glial cells in the nervous system?

Which part of the nervous system is derived from the ectoderm?

What is the function of a ganglion in the nervous system?

Which type of neurons occur only in the central nervous system?

What is the main difference between glia and neurons?

Which cells are able to divide throughout the lifespan and maintain neurons?

Which part of the neuron is responsible for receiving inputs?

What is the function of the myelin sheath in neurons?

What is the main difference between dorsal and ventral in the brain?

What is the main function of Broadman areas in the cerebral cortex?

Which type of neuron is among the least numerous in the nervous system?

What is the key feature of chemical synapses?

What is the main function of convergent connections in the nervous system?

What is the size of the synaptic cleft in a chemical synapse?

Which part of the neuron is responsible for increasing conduction velocity?

What is the main difference between neurons and glia?

What is the purpose of the myelin sheath in neurons?

What is the main transmembrane force acting on an ion during an action potential?

What is the main function of glial cells in the nervous system?

What is the difference between glial cells and neurons?

What are glial cells sometimes called?

Which type of cells are supporting cells in the nervous system?

What is the main difference between glial cells and neurons in terms of numbers?