ATI Pathophysiology Practice Exam 2025 – All-in-One Guide to Master Your Exam Success!

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What does homeostasis in the body refer to?

The body's ability to resist infection

The body's ability to maintain a stable internal environment despite external changes

Homeostasis refers to the body's ability to maintain a stable internal environment despite changes that may occur externally. This complex process involves various physiological mechanisms that regulate factors such as temperature, pH, hydration, and electrolyte balance. For example, when the external temperature rises, the body activates mechanisms like sweating and increased blood flow to the skin to dissipate heat, ensuring that core body temperature remains within a narrow, optimal range. Similarly, when blood sugar levels fluctuate after eating, the body responds by releasing insulin or glucagon to restore balance. This constant adjustment is crucial for overall health and functioning, highlighting how the body's internal systems work cohesively to adapt to outside influences while maintaining equilibrium.

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The body's response to stress

The body's growth and development

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