Lab topic one-

Nervous Function-

1. What is the electrode measuring?

the electrode is being used to measure the activity of the neurons. An electrode is a conductor through which electric current is passed. Found in variable forms, electrodes may be wires, plates, or rods. An electrode may be constructed of metal, such as copper, silver, lead, or zinc. However, an electrode may also be made of a nonmetal substance, such as carbon.

2. Why use leeches in neurophysiology experiments?

Leeches are very interesting creatures to do an experiments on. I think that they are a very well species to use, because they do not have a complex system. They are very simple.

3. What is the difference between a sensory and a motor neuron?

Motor neurons - send information from the C.N.S to the muscles. Causing the muscles to move. They have short dendrites and long axons. The diagram below show a diagram of a motor neuron
Sensory neurons - send information from the sense organs to the C.N.S. They have long dendrites and short axons. The diagram above shows a picture of a sensory neuron.

4. Do you think a leech experiences pain? What is pain?

Pain is a sensation that hurts. It may cause discomfort, distress or agony. It may be steady or throbbing. It may be stabbing, aching, or pinching. However you feel pain, only you can describe it or define it. There fore I like to think that leeches do experience pain just as well as anything or anyone else.

5. What were the two most interesting things about doing this lab?

I think that the most interesting thing about this lab, was to the study on the leeches. It was interesting to try and find the nervous system inside the leech and how it looked.

6. Anything you found confusing or didn't like about the lab?

I don't really think there is anything that really stands out in this lab that I didn't like actually, I found it to be fun and very educational.