Glossary A
Glossary A
Actin is a structural protein of muscle that works with myosin in permitting muscular contraction.
Deutsch: Handlung / Español: Acción / Português: Ação / Français: Action / Italiano: Azione /
Action includes motor activities, such as moving the head or eyes and locomoting through the environment. Action is also the stage in the Transtheoretical Model where subjects are actually changing their behavior. The change has to have taken place over the last six (6) months and should involve active efforts to change the behavior.
Action Potential refers to the all-or-none electrical event in the neuron or muscle cell in which the polarity of the cell membrane is rapidly reversed and then reestablished. Moreover, it is an electrical potential across the neuron membrane. The action potential spreads down the axon as the voltage-controlled sodium channels open up sequentially, like falling dominoes.