| Popis: |
Nerve action potentials and conduction velocity have been reported by utilizinq several experiment procedures and mentioned in many physiology and exercise physioloqy textbooks. Although nerve action potentials and conduction velocity are a little complicated, some procedures to determine them can be simple. The purpose of this study is to show one of the simple ways of the experiment procedures to obtain nerve action potentials and conduction velocity. A flog was killed by cutting off the upper jaw and anterior skull. The trunk and one hind leg were skinned. After the skin was removed from one leg, the right sciatic nerve of the frog was exposed and used. The intact sciatic nerve was picked up by the threads attached and the nerve was laid across the electrode wires of the nerve chamber. The stimulator, the oscilloscope and the physiograph were used in this study. Starting with a minimum voltage of long duration, chronaxie time was obtained. By using pick-up electrodes in different spaces, action potentials were gained. By stimulating the nerve with the constant voltage of various durations, absolute and relative refractory periods were acquired. After the nerve was damaged, the monophasic action potential was observed. |
