AP PSYCHOLOGY

Detailed explanation-1: -Just like a nerve impulse goes in one direction, the toilet only flushes one way. Just like a neuron won’t fire for a brief time after firing an impulse, a toilet won’t flush again for a certain period of time after flushing because it is being refilled.

Detailed explanation-2: -Works like flushing a toilet: All or none-the toilet either flushes or it doesn’t; refractory period—tank must fill before toilet can be flushed again. Depolarization: occurs when positive ions enter the neuron, making it more prone to firing an action potential.

Detailed explanation-3: -The all or none principle means that signal transmission between neurons is not dependent on the strength of the stimuli but, rather, only that the initial threshold is met. In other words, neurons will either transmit an impulse over the synapse to the next neuron completely or not at all.

Detailed explanation-4: -In physiology, the all-or-none law (sometimes the all-or-none principle or all-or-nothing law) is the principle that if a single nerve fibre is stimulated, it will always give a maximal response and produce an electrical impulse of a single amplitude.

Detailed explanation-5: -Direction of impulse – the toilet only flushes one way; the impulse can’t come the other direction (you hope!!) Threshold – you can push the handle a little bit, but it won’t flush until you push the handle past a certain critical point.