MEDICAL PHYSIOLOGY

Detailed explanation-1: -A skeletal muscle fiber will produce a given amount of force if the stimulus is strong enough to reach the threshold for muscle contraction. This is called the all or none law.

Detailed explanation-2: -The ‘All or None’ Law Each fibre within a motor unit contracts according to the all or none law. This principle states that when a motor unit receives a stimulus of sufficient intensity to bring forth a response, all the muscle fibres within the unit will contract at the same time, and to the maximum possible extent.

Detailed explanation-3: -The all-or-none law is the principle that the strength by which a nerve or muscle fiber responds to a stimulus is independent of the strength of the stimulus. If that stimulus exceeds the threshold potential, the nerve or muscle fiber will give a complete response; otherwise, there is no response.

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: -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.