In a Laboratory Situation, a Nerve Can Be Stimulated by Applying

question 16

Essay

In a laboratory situation, a nerve can be stimulated by applying voltage from a stimulator.If a stimulus was applied in the middle of a nerve roughly halfway between the cell bodies and the axon terminals, would resulting action potentials travel only from the stimulus point to the axon terminal? Why or why not? How is this similar to or different from the basic characteristics of an action potential discussed in this chapter? What does this tell you about the nature of the axon?

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Definitions:

Pursed-Lip Breathing

A breathing technique that involves breathing in through the nose and out through tightly pressed (pursed) lips to improve breath control.

Emphysema

A long-term, progressive disease of the lungs that primarily causes shortness of breath due to over-inflation of the air sacs (alveoli).

Pneumothorax

The presence of air or gas in the pleural space that causes collapse of the lung.

Chronic Bronchitis

A long-term inflammatory condition of the bronchi in the lungs, characterized by persistent coughing and mucus production.