If you file a consolidated Oregon return and have more than one affiliate doing business in Oregon or with Oregon-source income, you must complete Schedule AF and submit it with your return. Select a topic to get more tax information: 1  Corporation estimated tax.  Corporations with headquarters outside of Oregon.
All-or-none Response: Phenomenon in which a muscle fiber contracts completely when exposed to a threshold stimulus, or not at all. When a skeletal muscle is stimulated to contract by a motor neuron a minimum amount of stimulus is needed to start the process of muscle contraction.
3. All-or-Nothing Response a. If a muscle fiber is brought to threshold or above, it responds with a complete twitch; that is, a muscle cell contracts completely no matter how strong a stimulus, as long as the stimulus is threshold or stronger b. If the stimulus is sub-threshold, the muscle fiber will not respond. c.