The Stretch Reflex : (See Figure 13.15). The stretch reflex in its simplest form involves only 2 neurons, and is therefore sometimes called a 2-neuron reflex. The two neurons are a sensory and a motor neuron. The sensory neuron is stimulated by stretch (extension) of a muscle.
Flash floods are the most common flood type in normally-dry channels in arid zones, known as arroyos in the southwest United States and many other names elsewhere. In that setting, the first flood water to arrive is depleted as it wets the sandy stream bed.
During a Flood-If a flood is likely in your area, you should: 1  Listen to the radio or television for information. 2  Be aware that flash flooding can occur. 3  If there is any possibility of a flash flood, move immediately to higher ground.4  Do not wait for instructions to move. If there is any possibility of a flash flood, move immediately to higher ground. 2  Do not wait for instructions to move. 3  Be aware of streams, drainage channels, canyons, and other areas known to flood suddenly. 4  Flash floods can occur in these areas with or without such typical warnings as rain clouds or heavy rain.