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UNIT 4

LESSON 3

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Homeostasis Portfolio

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Homeostasis Portfolio 3

Which of the following is a good definition of homeostasis? (2 points)

Ο

Homeostasis means that our body monitors the value of several parameters and prevents them

from ever changing.

O Homeostasis means that our body doesn't regulate the value of different body parameters.

O

Homeostasis means that our body monitors the value of several parameters and restores them to

their correct value after any alteration.

O Homeostasis means that we stand still all the time.

Which of the following variables do our bodies regulate: (2 points)

Blood volume

Glucose concentration in blood

O Body temperature

All answers are correct

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Verified Answer :

Final answer:

Homeostasis is the process by which the body maintains stable internal conditions despite external changes. It involves monitoring and correcting various parameters like blood volume, glucose concentration, and body temperature. The correct answers are that homeostasis restores parameter values after changes, and all listed variables are regulated by the body.


Explanation:

Understanding Homeostasis

Homeostasis is a vital concept in biology that refers to the way our body maintains a stable internal environment despite changes in external conditions. The correct definition is: Homeostasis means that our body monitors the value of several parameters and restores them to their correct value after any alteration. This includes regulating factors such as temperature, pH levels, and concentrations of various substances in the body.

Examples of Homeostatic Regulation

Our bodies continuously regulate a variety of important physical conditions to ensure optimal functioning. Some key variables that are regulated include:

  1. Blood volume: Maintaining appropriate levels of fluid in the circulatory system.
  2. Glucose concentration in blood: Regulating sugar levels to provide energy, primarily managed by insulin.
  3. Body temperature: Keeping a narrow range of temperature (around 98.6°F or 37°C) through processes like sweating and shivering.

Given these examples, the answer to which variables our bodies regulate is: All answers are correct. Thus, it is clear that homeostasis is essential for maintaining health and proper function.


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