Homeostasis in Biology

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Questions and Answers

What is the primary definition of homeostasis?

  • The ability to regulate temperature in the body
  • The maintenance of constant internal environment in the body (correct)
  • The development of new tissues in response to injury
  • The process of eliminating waste from the body

Which of the following is NOT included in the extracellular fluid (ECF)?

  • Cytoplasm of cells (correct)
  • Interstitial fluid
  • Nutrient solutions
  • Blood

What happens if the internal environment deviates beyond physiological limits?

  • The body remains unaffected and continues normal function
  • The body may experience malfunction or dysfunction (correct)
  • The body enters a state of enhanced functionality
  • The body adapts to the new environment instantly

Which component of the homeostatic system is responsible for recognizing deviations from the normal state?

<p>Sensors or detectors (A)</p> Signup and view all the answers

What is the final goal of an organism with respect to homeostasis?

<p>To maintain a normal, healthy state (D)</p> Signup and view all the answers

What is the role of the effector in a feedback system?

<p>To correct deviations and return the variable to homeostasis (B)</p> Signup and view all the answers

Which component of a feedback system sends information to the control center?

<p>Receptor (B)</p> Signup and view all the answers

How is information transmitted from the control center to the effectors?

<p>Via electrical impulses or hormones (D)</p> Signup and view all the answers

What is the main purpose of the feedback system in homeostasis?

<p>To maintain a constant internal environment (A)</p> Signup and view all the answers

What happens when an imbalance in homeostasis is detected?

<p>The stimulus produces a change in the variable (D)</p> Signup and view all the answers

Flashcards

Homeostasis

Maintaining a stable internal body environment.

Extracellular Fluid (ECF)

Fluid outside body cells, crucial for cell survival.

Internal Environment

The extracellular fluid, meticulously maintained for health.

Homeostatic System

Self-regulating parts in the body maintaining stability.

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Sensors (detectors)

Components that notice when internal conditions change.

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Control Centre

Processes input, then sends instructions to adjust the imbalance.

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Receptor

Detects changes in the internal environment.

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Effector

Responds to signals from the control center to restore balance.

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Variable (Homeostasis)

The aspect of the body that is regulated to maintain a constant state.

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Feedback System (Homeostasis)

A cycle regulating internal conditions by means of input, process and output to maintain internal balance.

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