Everyday we are bombarded by stimuli. These could include internal stimuli that include cells functioning in day to day processes and external stimuli that include sights, sounds, smells, touches, and tastes. In this experiment, we looked at how a single stimulus and multiple stimuli work. Also length-tension relationships were looked at.

When we receive information from a stimulus, there are a number of things that take place. The process starts with detection and goes on to amplification, decoding and discrimination, adaptation and termination, gating of ion channels, electrical response of the membrane, and fin

ally transmission to the brain. Whether there is a single stimulus or multiple stimuli, there is an action potential (AP) fired. With a single stimulus, only one action potential is fired and so its intensity will not last very long. However, when there are multiple stimuli, multiple action potentials are fired thus sending the information much further. In a tetanic contraction, this is most evident. When a motor axon is stimulated tetanically, it is stimulated at a high frequency for a relatively long time.

Isometric contractions are contractions in which a muscle does not shorten significantly. There may be some internal shortening but it is only about 1 % due to the intracellular and extracellular elastic components that are stretched.

Appendix A contains data that was collected for multiple stimulus, isometric contractions, and isotonic contractions. For multiple stimuli and isotonic contractions, the reading on the oscilloscope was printed and graphs were made from all three data collections. For multiple stimuli, there is an oscilloscope reading, data recorded from the force, and a graph plotting the data collected. For the isometric contraction, there is only the data collected from stimulating the muscle and a graph of the force exerted. For the isotonic contraction, there is an oscilloscope reading, a table of data recorded, and a graph plotting the data.

In Part 1 of the experiment, we looked at the actions of a single stimulus. After the oscilloscope record

Some topics in this essay:
RESULTS Appendix, INTRODUCTION Everyday, , Dr Das, multiple stimuli, experiment looked, data collected, single stimulus, action potential, isotonic contraction, isometric contractions, oscilloscope reading, stimuli include, isometric contraction, single stimulus multiple, action potential fired, graph plotting data, stimulus multiple stimuli, experiment looked actions,