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What is Homeostasis?

What is Homeostasis?

Maintaining homeostasis requires that the body continuously maintain its internal conditions. Each physiological condition has a particular set point, from body temperature to blood pressure to levels of certain nutrients. A set point is the physiological value around which the normal range fluctuates. A normal range is a restricted set of values that is optimally healthful and stable. For example, the set point for normal human body temperature is approximately 37°C (98.6°F). Physiological...

Homeostatic Imbalance

Homeostatic Imbalance

Homeostasis is the maintenance of a stable internal environment within the body, which is crucial for the proper functioning of cells, tissues, organs, and organ systems. The body has various control mechanisms that work together to regulate various physiological parameters such as temperature, blood pressure, pH balance, and fluid balance, to name a few. These control mechanisms are based on feedback loops that can be either positive or negative.
However, sometimes these feedback loops fail,...

Positive and Negative Feedback Loops

Positive and Negative Feedback Loops

Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires maintaining an internal dynamic equilibrium:

Non-equilibrium in the Cell

Non-equilibrium in the Cell

An important concept in studying metabolism and energy is that of chemical equilibrium. Most chemical reactions are reversible. They can proceed in both directions, releasing energy into their environment in one direction, and absorbing it from the environment in the other direction. The same is true for the chemical reactions involved in cell metabolism, such as the breaking down and building up of proteins into and from individual amino acids, respectively. Reactants within a closed system...

Skeleton and Calcium Homeostasis

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.

Homeostatic Imbalances in Body Temperature

Homeostatic Imbalances in Body Temperature

Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...

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Related Experiment Video

Updated: Jun 12, 2026

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Published on: December 18, 2013

Returning home.

Emily A Haozous¹

¹University of New Mexico School of Nursing, Albuquerque, USA. ehaozous@salud.unm.edu

Creative Nursing

|May 22, 2010

Summary

This summary is machine-generated.

Descendant Emily Haozous traces her journey through academic nursing, returning to New Mexico over a century after the Chiricahua Apache captivity ended the Indian Wars.

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Last Updated: Jun 12, 2026

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

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Published on: December 18, 2013

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Area of Science:

Indigenous Studies
Nursing History
American History

Background:

The U.S. government's 1886 capture of the Chiricahua Apaches marked the end of the Indian Wars.
This event concluded a significant chapter in American history and Indigenous relations.

Observation:

Emily Haozous, a descendant of Chiricahua Apache captives, shares her personal narrative.
Her story details a unique journey spanning academic nursing and a return to her ancestral lands.

Findings:

Haozous's academic nursing path is presented as a 'circuitous' route.
This journey is intrinsically linked to her ancestral heritage and the historical context of her people.

Implications:

The narrative highlights the enduring impact of historical events on contemporary identity and personal journeys.
It underscores the intersection of Indigenous heritage, academic pursuits, and the field of nursing.
Haozous's experience offers a unique perspective on cultural resilience and the search for belonging.