Homeostasis

Definition

Homeostasis is the process by which biological systems maintain stability while adjusting to changing external conditions. It is crucial for the proper functioning of organisms, ensuring that internal environments remain consistent and balanced.

5 Must Know Facts For Your Next Test

1. Homeostasis involves multiple physiological processes such as temperature regulation, pH balance, and glucose levels.
2. The digestive system plays a key role in maintaining homeostasis by regulating nutrient absorption and waste elimination.
3. Endocrine glands release hormones that help regulate homeostatic functions like metabolism, stress responses, and fluid balance.
4. Imbalances in homeostasis can lead to conditions such as diabetes, dehydration, or electrolyte imbalances.
5. Nurses must monitor patients for signs of disrupted homeostasis, such as abnormal vital signs or lab results, to intervene appropriately.

Review Questions

• How does the endocrine system contribute to maintaining homeostasis?
• What role does the digestive system play in regulating homeostatic balance?
• Which clinical signs might indicate a disruption in a patient's homeostasis?

Related terms

Metabolism: The set of life-sustaining chemical reactions in organisms that convert food into energy and building blocks for growth.

Hormones: Chemical messengers produced by endocrine glands that regulate various physiological processes including growth, metabolism, and mood.

Electrolyte Balance: The maintenance of proper concentrations of ions like sodium and potassium in bodily fluids which is essential for nerve function and muscle contraction.