Alteration

Definition

Alteration refers to a change or modification in the structure or function of an organism's body. These changes can affect homeostasis, impacting how the body maintains internal stability.

5 Must Know Facts For Your Next Test

1. Alterations can be temporary or permanent and may result from external environmental factors or internal processes.
2. Homeostatic imbalances often trigger alterations as the body attempts to return to equilibrium.
3. Genetic mutations are a form of alteration that can impact an organism's physiology and homeostasis.
4. Physiological alterations such as increased heart rate or sweating occur as immediate responses to maintain homeostasis.
5. Long-term alterations, like those due to chronic diseases, require adaptive mechanisms for maintaining homeostasis.

Review Questions

• What is meant by 'alteration' in the context of biological systems?
• How do alterations relate to the concept of homeostasis?
• Can you provide an example of a physiological alteration and its role in maintaining homeostasis?

Related terms

Homeostasis:

The process by which organisms maintain a stable internal environment despite external changes.

Adaptation: A long-term evolutionary process where organisms become better suited to their environment.

Mutation: A change in the DNA sequence that can lead to alterations in protein function and potentially impact an organism’s traits.