What happens to sodium channels and potassium channels during repolarization of a neuron? both potassium channels and sodium channels remain closed the sodium channels close, followed by opening of the potassium channels both sodium channels and potassium channels remain closed the sodium channels open, but the potassium channels remain closed both potassium channels and sodium channels remain open

Early in an action potential, the inside of the axon becomes less negatively charged relative to the outside, this is called.   Polarization  Depolarization  Hyperpolarization  Repolarization ---------------------------------- Neurotransmitters -gated (ligand gated) ions channels are important for ____, while voltage gated ion channels are important for ____    Communication between neurons; communication within neurons    communication within neurons; Communication between neurons ------------------------------- In gross neuroanatomy we are interested in structures that are NOT visible to the naked eye.  True or false.

A neuron has a resting membrane potential of -70 milivolts (mV) and a threshold value of -55 mV. Three synapses on the body of this neuron receive the impulses listed below. hyperpolarisation by 5 mV • depolarisation by 15 mV • depolarisation by 10 mV ENTER THE MEMBRANE POTENTIAL AS A NUMBER WITH + OR - IN FRONT OF IT. The final membrane potential will be mV and this cause an action potential becasue it is v than the

Which of the following is FALSE about action potentials?      At resting potential, there are more potassium channels open and most sodium channels are closed.     Depolarization is due to the flow of Na+ out of the axon via voltage-gated Na+ channels.     Hyperpolarization is due to continued loss of K+ from the axon.     During repolarization, K+ flows out of the axon along its concentration gradient.     Resting membrane potential is primarily established by the Na+/K+ pump.

In excitable cells, such as neurons, K+ is held at a much higher concentration inside the cell than outside. Which of the following would hold K+ at this concentration?

The following table summarizes the characteristics of four different neurons. Based on these characteristics, which of these neurons would most likely have the slowest conduction velocity? Neuron #3 #4 O #1 O #2 #3 O #4 Diameter (μM) P Myelination no

Draw a simple schematic of a neuron and label its parts. Where does “information” usually go in and through which structure is it passed on? Where is the action potential generated?

Which of the following takes place during an action potential? Na+ ions exit the cell causing depolarization Repolarization occurs when K+ ions enter the cell The membrane becomes more negative during depolarization K+ ions start the action potentials Na+ enters the cell making the membrane potential positive.

Stimuli below this intensity will result in no response in a neuron. Resting Membrane Potential Electrical Threshold Repolarization Action potential

Part A When sodium ion channels open, what happens to the cell's membrane potential? O hyperpolarization O repolarization depolarization the cell maintains its resting membrane potential Submit Request Answer Provide Feedback