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- they depend on the number of receptors activated
- they sum up and have no refractory period thus exhibit spatial and temporal summation
- they have no threshold -depends on the concentration of ligand(stimulus)
- they cant be propagated
Skylar Hagenes
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Can graded potential form on receptor endings?
Yes, Graded potentials (otherwise known as postsynaptic potentials) can form on receptor endings.
How does an action potential differ from a graded potential?
Action potentials also known as spikes, differ from graded potentials in that they do not diminish in strength as they travel through the neuron.
What potentials are short-livedlocal changes in membrane potential that can be either depolarized or hyperpolarized?
Graded Potentials
What is occurring between the dendritic end and the axon hillock?
conduction and summation of graded potentials.
A small deviation from the resting membrane potential that makes the membrane more or less polarized?
graded potentials
What potentials are short-lived and decremental?
graded (local) potentials
Graded potentials will not be initiated by?
iono
Can graded potential form on receptor endings?
Yes, Graded potentials (otherwise known as postsynaptic potentials) can form on receptor endings.
Are graded potentials the same as local potentials?
Postsynaptic potentials are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none, and are not postsynaptic potentials.
What potentials are short-livedlocal changes in membrane potential that can be either depolarized or hyperpolarized?
Graded Potentials
How does an action potential differ from a graded potential?
Action potentials also known as spikes, differ from graded potentials in that they do not diminish in strength as they travel through the neuron.
Where do graded potentials occur?
On the dendrites and subsequently the soma (body) of neurons.
What is occurring between the dendritic end and the axon hillock?
conduction and summation of graded potentials.
What are the characteristics of graded potentials?
they depend on the number of receptors activatedthey sum up and have no refractory period thus exhibit spatial and temporal summationthey have no threshold -depends on the concentration of ligand(stimulus)they cant be propagated
A small deviation from the resting membrane potential that makes the membrane more or less polarized?
graded potentials
What kind of gated channels are involved in the generation of graded potentials?
chemically regulated gates, voltage regulated gates
Do graded potentials increase amplitude as they move away from the stimulus?
No, they actually decrease in amplitude as they move away from the stimulus point.
