Final answer:
The differences between normal and cancerous lung tissue affect lung function. Cancerous tissue can obstruct the airways, invade healthy tissue, and impair gas exchange. It can also spread to other parts of the body.
Step-by-step explanation:
The differences in normal and cancerous tissue of the lung have a significant impact on its function. Normal lung tissue is composed of a well-organized structure that allows for efficient exchange of oxygen and carbon dioxide during respiration. It contains alveoli, which are small air sacs where oxygen is taken in and carbon dioxide is released. In contrast, cancerous tissue of the lung is characterized by uncontrolled cell growth, which disrupts the normal structure and function of the lung.
Cancerous tumors can obstruct the airways, making it difficult for air to move in and out of the lungs. This can lead to symptoms such as shortness of breath, wheezing, and coughing. Additionally, cancerous tissue can invade and damage healthy lung tissue, impairing its ability to perform vital functions.
For example, if a tumor blocks a major airway, it can cause a collapse of the lung, leading to a decrease in ventilation. This can result in inadequate oxygenation of the blood and impaired gas exchange. Moreover, cancerous tissue can spread to other parts of the body through the bloodstream or lymphatic system, further compromising overall lung function.