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HOMEOSTASIS LAB

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by

Mo Castillo

on 10 October 2013

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Transcript of HOMEOSTASIS LAB

HOMEOSTASIS LAB
VOCABULARY REVIEW

Background Information
Your body’s temperature, heart rate, and blood pressure need to remain within certain set ranges in order to maintain homeostasis. Homeostasis is the body’s ability to maintain relative constancy internally with respect to its changing external environment.
Today you are going to explore the following questions:
1. How does your body respond to changes in activity?
2. How are these responses related to maintaining homeostasis in your body?
Conclusion
1. What are the effects of exercise over time on the circulatory system?
2. What are the effects of exercise over time on the respiratory system?
3. What are the effects of exercise over time on the perspiration level?
4. What other processes could you measure to determine the external and internal effects of exercise on the body?
5. How is perspiration level related to body temperature?
6. How is perspiration level related to heart rate?
7. How is perspiration level related to respiratory rate?
8. How is heart rate related to homeostasis?
9. How is respiratory rate related to homeostasis?
10. How is perspiration level related to homeostasis?

Physiology 9A &9B
9. As a result of the coordinated structures and functions of organ systems, the internal environment of the human body remains relatively stable (homeostatic) despite changes in the outside environment. As a basis for understanding this concept:
a.Students know how the complementary activity of major body systems provides cells with oxygen and nutrients and removes toxic waste products such as carbon dioxide.
b.Students know how the nervous system mediates communication between differ­ent parts of the body and the body’s interactions with the environment.
Dogs have just a few sweat glands in their paws; so no matter how much they sweat; sweating could never cool them off. That's where the tongue-hanging out, mouth-open dog panting comes in. The major blood vessel in a dog's head runs very close to the surface of its nose. The fresh air a dog breathes works like a fan to cool the blood in the nose, which then circulates through the dog's body to cool the rest of the body. The dog then exhales the warm air out its mouth.
Body Temperature Examples
The red Kangaroo licks its paws to maintain internal body temperature.
Body Temperature Examples
But first a few key terms...
Homeostasis (p. 10)
Regulation of an organism's internal environment to maintain conditions needed for life.
Dependent Variable (p. 19)
factor being measured in a controlled experiment:its value changes because of changes to the independent variable.
Independent Variable (p. 19)
The one factor that can be changed in a controlled experiment; is the factor tested and affects the experiment outcome.
Dependent vs. Independent Variable
The circulatory system transports blood to deliver important substances , such as oxygen, to cells & to remove wastes, such as carbon dioxide.
Circulatory System
The respiratory system is the exchange of oxygen and carbon dioxide between the atmosphere and the blood and between the blood and the body's cells.
Respiratory System
Physiology 9A &9B
9. As a result of the coordinated structures and functions of organ systems, the internal environment of the human body remains relatively stable (homeostatic) despite changes in the outside environment. As a basis for understanding this concept:
a.Students know how the complementary activity of major body systems provides cells with oxygen and nutrients and removes toxic waste products such as carbon dioxide.
b.Students know how the nervous system mediates communication between differ­ent parts of the body and the body’s interactions with the environment.
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