PATHOLOGY

Detailed explanation-1: -Graded potentials are small changes in membrane potential that are either excitatory (depolarize the membrane) or inhibitory (hyperpolarize the membrane). Many excitatory graded potentials have to happen at once to depolarize the cell body enough to trigger the action potential.

Detailed explanation-2: -All types of graded potentials will result in small changes of either depolarization or hyperpolarization in the voltage of a membrane. These changes can lead to the neuron reaching threshold if the changes add together, or summate.

Detailed explanation-3: -Graded potentials produced from a synapse are called synaptic or post-synaptic potentials. And those generated by stimuli and sensory receptors are also called receptor potentials.