Biology 22- PhysioEx: exercise 3, activity 3: The action potential: threshold 2023 passed

Biology 22- PhysioEx: exercise 3, activity 3: The action potential: threshold 2023 passed axons are - correct answer long, thin structures that extend from a neuronal cell body which of the following is easier? - correct answer extracellular recordings of the action potential an action potential is usually initiated in an axon at or near - correct answer -axon hillock -initial segment -trigger zone the initiation of an action potential in a sensory neuron in the body normally - correct answer follows a sufficiently large depolarizing receptor potential why is the action potential recorded by the second recording electrode (R2) delayed relative to the action potential recorded by the first recording electrode (R1)? - correct answer the action potential had to propagate from R1 to R2 an increase in extracellular K+ would depolarize a neuron. this depolarization would occur if neurons were damaged. from what you have just learned about generating an action potential, what effect would this have on nearby axons? the nearby axonal membranes will _____. - correct answer be depolarized to values near or above threshold voltages the threshold voltage in an axon is usually - correct answer less negative than the resting membrane potential