The schematic below represents an action potential recorded in a neuronal cell body with an intracellular microelectrode

[answerhappygod]

The Schematic Below Represents An Action Potential Recorded In A Neuronal Cell Body With An Intracellular Microelectrode 1 (361.86 KiB) Viewed 13 times

The Schematic Below Represents An Action Potential Recorded In A Neuronal Cell Body With An Intracellular Microelectrode 2 (144.85 KiB) Viewed 13 times

Im not sure about my answers with 3 and 9, are they right?
The schematic below represents an action potential recorded in a neuronal cell body with an intracellular microelectrode. +30 Transmembrane Potential (mv) -400 -60H + Time (msec) In relation to this drawing, which of the statements below is INCORRECT? The neuron is in the relative refractory period at the point labelled 4. The point labelled 1 denotes the excitatory postsynaptic potential (EPSP). The process of activation of voltage-gated K channels starts at (or just before) the point labelled 3. O At the point labelled 2, the cell membrane permeability to Nations is smaller than permeability to K+ ions (PNa<PK).

Question 10 0.05 pts A depolarising graded potential: is seen when the cell approaches threshold. is considered to be a type of action potential. is the last part of an action potential. makes the membrane more polarised.

Question 15 0.05 pts The duration of a single neuronal action potential (excluding the afterhyperpolarisation, which can be quite long-lasting) is approximately how many milliseconds? (hint: just type a whole number, no decimal places or units are required)

Question 9 0.05 pts When the summed total of postsynaptic potentials rises above threshold, creation of action potentials first occurs: O in the synaptic cleft. O in the neuron nucleus. in the dendrites. O in the neuroplasm. O at the trigger zone.

Question 3 0.05 pts On average, the resting membrane potential in neurons is -65mV (typical range is -60 to -70mV). What does the sign and magnitude of this value tell you? The inside surface of the plasma membrane is much more positively charged than the outside surface. There is no electrical potential difference between the inside and outside surfaces of the plasma membrane. The outside surface of the plasma membrane is much more negatively charged than the inside surface. The inside surface of the plasma membrane is much more negatively charged than the outside surface.