which of the following descibe action potential 1. can be added together 2. can travel long distance without loosing strength. 3. can be a small hyperpolariztion or small depolarization 4. usually occur on the dendrites or cell body of a multipolar neuron.
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26- Which of the following are true regarding local/graded potential? Select all that apply Can be excitatory - Can be inhibitory - Follow the all-or-none rule - Can be reversed - Self-propagate for long distances - Weaken over distance 27- Which structure is most likely to have local potentials when neurotransmitters bind to receptors? Part 3 - Part 2 - Part 4 - Part 5 - Part 4 - Part 1 29- In the image shown above, which structure is most likely to have exocytosis of a neurotransmitter? Part 4 - Part 3 - Part 1 - Part 5 - Part 2 28- Which of the following is true about the differential in concentration of ions across the membrane of a neuron at RESTING membrane potential? Select all that apply K+ and Na+ equally distributed across the membrane - More Na+ inside the cell than outside - More K+ outside the cell than inside - More K+ inside the cell than outside - More Na+ outside the cell than on the inside. 30- The part of the neuron that receives information is the dendrites while the soma/cell body is responsible for sending information. 31- (spatial, temporal) summation is when a neuron receives many inputs in a short amount of time while (temporal, spatial) summation is when a neuron receives multiple inputs at the same time on different dendrites. 32- Divergence refers to... select all that apply Information is transmitted linearly from one neuron to a second neuron - Information transmitted in one neuronal pathway splits and is transmitted into two or more pathways - When a small number of presynaptic neurons synapse with a larger number of postsynaptic neurons - When a large number of presynaptic neurons synapse with a similar number of postsynaptic neurons.
Adi S.
Choose the correct(s) regarding membrane potential. Select all that apply: 1. Graded potentials can be summed. 2. At rest, the neuronal membrane is more permeable to Na+. 3. Graded potentials can result in hyperpolarization or depolarization. 4. Action potentials only occur in excitable membranes. 5. Action potentials are decremental. 6. Action potentials are mediated via ligand-gated Na+ channels. 7. An action potential can only begin once the threshold is reached.
Which of the following statement(s) are true with respect to graded potentials? Select all of the correct answers. Graded potentials can summate in space and time. An action potential is required to generate a graded potential. Graded potential amplitudes decay over distances. Graded potential amplitude increases with stimulus strength. Graded potentials are not regenerative. A graded potential has a threshold.
Sana R.
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