homework questions

1. Homeostasis is important to your body’s functioning because it regulates and maintains an internal equilibrium in the body, so basically controlling everything. It maintains equilibrium in all our body contains. Our body has the necessity to maintain an internal environment, for example it regulates blood temperature, blood sugar levels, and water in your body. Therefore homeostasis it is important to our body’s function, considering it needs a narrow range of conditions to survive.

2. The three ways that help our skin maintain homeostasis in our body is sweating, shivering and hair. These help to regulate our body temperature provide a barrier against dirt and microorganisms, as well as to serves for protection.

3.One way that our body maintains a constant temperature while outside on a cold day is: “releasing heat”. Our body maintains a normal temperature of 37°. To maintain a constant temperature and balance in our body we start sweating and then we cool down when the sweating evaporates.

HOMEWORK

1. Explain why homeostasis is important to your body's functioning.

Homeostasis means to maintain constant internal temperature. It is important because it helps cells function properly. This is because without homeostasis cells in certain organelles can be damaged. For example, if an enzyme becomes damaged, it won’t be able to catalyze certain molecules that your body may need.

The lack of homeostasis can also cause dehydration, hypertension, diabetes, hypoglycemia, hyperglycemia and many other imbalances

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2. Give three examples of ways your skin helps maintain homeostasis in your body.

-          Skin helps maintain homeostasis in our body by regulating sweat being released. This “evaporation” helps the body cool down.

-          Skin helps maintain homeostasis in our body by dilatation of the blood vessels in our skin, which helps create a higher flow of blood, helping the body cool down.

-          Skin helps maintain homeostasis in our body by thermiogenesis which generates heat by raising the body’s metabolic rate and by shivering.

3. Explain one way that your body maintains a constant temperature while outside on a cold day.

On a cold day my body maintains a constant temperature by shivering. This causes the muscles to contract releasing heat, which helps maintain a constant body temperature. 




Bibliography

IHW (march, 2006).Homeostasis (www.biologymad.com). Retrieved on 11 November, 2010 from http://www.biologymad.com/resources/A2%20Homeostasis.pdf

Cartage (n.d). Skin and Heomostasis (www.cartage.org). Retrieved on 11 November 2010 from http://www.cartage.org.lb/en/themes/sciences/lifescience/generalbiology/physiology/IntegumentarySystem/Integumentary/SkinandHomeostasis/SkinandHomeostasis.htm

1.-That even if temperature outside changes, homeostasis helps your body to maintain a stable temperature so you can survive.

2.-Helps to protect bacteria or small organisms that can enter your body
· Helps keeping a stable temperature, even if environment temperature varies
·Protects body in changes or cold days

3.-When there are cold temperatures, your muscles contract, they release heat to keepyour body warm

Activity 1, Section 27.3

1.Explain why homeostasis is important to your body's functioning.
Homeostasis is the internal stability temperature in our body, it’s extremely important because our body can only function as it should between a small range of conditions. If our body can’t maintain stability within those conditions, between the set point, our tissues would not survive.

2.Give three examples of ways your skin helps maintain homeostasis in your body.• skin provides a physical barrier against dirt and microorganisms
• skin has a layered construction so it helps your body isolate from cold temperatures
• skin helps cushion internal organs in our body to protect us from possible injuries.

3.Explain one way that your body maintains a constant temperature while outside on a cold day.
The fast contractions of skeletal muscles release heat, helping your body maintain its temperature; this mechanism is called shivering.

1. Explain why homeostasis is important to you body's functioning.

even dough the weather changes, our body temperature mantains steady do to homeostasis providing s table temperature so that our tissue can survive.

2. Give 3 examples of ways your skin helps mantain homeostasis in your body.
- helps protect against dirt and microorganisms that enter the body.
-rsponds to stimuli when changes in temperature and water content.
- insulate body in cold days, and cushions internal organs.

3. Explain one way your body mantains a constant temperature while outside on a cold day.
when you shiver because of cold temperature, yout muscles contract and they release heat that helps mantain a stable temperature in the body.

Explain why homeostasis is important to your body's functioning.
- Iti is important for the bodys functioning because homostatis is the process by wich your body mantains a internal stability. As this stability is important because with out it your tissues could not survive.

Give an example of an organ that exchanges chemicals, and explain how its structure allows this.
- Intersitial fluid. Fills the gaps between cells in a tissue. Chemicals traveling in blood and tissue cells pass through interstial fluid.

Give three examples of ways your skin helps maintain homeostasis in your body.
-Skin provides a physiscal barrier against dirt and microorganisms enter the body
- By responding to stimuli as changes in body temperature and water content.
- Hair. In top of your head protects your scalp from ultraviolet radiation. Also an insulation from outisde temperature changing. And eyebrows, eyelashes prevent dirt and smal particles to enter your eye.

Explain one way that your body maintains a constant temperature while outside on a cold day.
By shivering caused by a rapid contraction of skeleton movement.

Tim's Response

1. 1.) Explain why homeostasis is important to your body's functioning.

Homeostasis is important to our body's functioning because homeostasis is what keeps our body at a stable temperature (37 degrees Celsius) for example if our bodies were at a very high temperature our cells would denature on the other hand if the temperature was to be extremely cold our cells would freeze. In conclusion 37 degrees is the "perfect" temperature since the body is not too hot nor too cold, just like the Earth when compared to the distance between itself and the sun. If the Earth was too close the whole planet would be a vast bare and dry land with no life whatsoever since the temperature is too high, on the other hand if the Earth were to be too far away the planet itself would be cold and dry hence temperature would too cold for life to grow.

2.) Give three examples of ways your skin helps maintain homeostasis in your body.

The examples used to support the idea of skin maintaining homeostasis in our bodies are:

• Provides physical barrier between the exterior and internal part of the body, not allowing any dirt or microorganisms whatsoever to enter the body. So no wind chill or any hot things should make contact with the inner body.
• The skin when under cold conditions contracts so that the body doesn't lose any heat. Since under these types of conditions heat is essential to survive.
• When under hot conditions your body sweats-it dehydrates. To be able to cool down your body. To have a better understanding of this concept one has to know that when evaporation takes place a chemical reaction takes place. Normally there is a surface beneath a liquid for example: your skin and your sweat. The wind is blown against your sweat so the skin loses energy but this energy happens to be heat energy hence cooling you down.

3. Explain one way that your body maintains a constant temperature while outside on a cold day.

When it's a cold day your body shivers since the muscles inside your body have contracted hence releasing heat energy to stabilize the body temperature.

Assignment One

1.Explain why homesostasis is important to your bodys functioning.
The internal stability homesostasis provides is important becuase some tissues can only function under a set of certain conditions.

2.Give three examples of ways your skin helps manitain homesostasis in your body.
Provides a physical barrier against dirt and other microorgansisms entering your body.
Insulates your bofy on cold days and a cushion for internal organs.
Helps to mantain homeostasis by repsonding to stimuli such as change of temperatures or water.

3.Explain one way your body manitains a constant temperature while outside on a cold day.
The body makes the muscles in the integumentary syrtem contract, mantaining heat within the body. Skin also provides a cover against cold temperatures.

Aswers Section 27.3

1. Explain why homeostasis is important to your body's functioning.
Homeostasis is what keeps your body internally stable or in a steady state. It keeps your tissues can only be maintained under certain conditions.

2. Give three examples of ways your skin helps maintain homeostasis in your body.
a. Keeps dirt and microorganisms from entering body
b. Cushion internal organs and prevents injuries
c. Control body temperature

3. Explain one way that your body maintains a constant temperature while outside on a cold day.
Shivering can maintain your body temperature because as you shiver, muscles release heat maintaining your body temperature.

Answers to questions

1. Explain why homeostasis is important to your body's functioning.Homeostasis means the internal stability, and it is important that the internal parts of our body are always in optimal conditions since our tissues can only survive in a narrow range of conditions called the set point
2. Give three examples of ways your skin helps maintain homeostasis in your body.• Regulating body temperature
• Giving body protection against harmful microorganisms
• Heats up body during cold conditions

3. Explain one way that your body maintains a constant temperature while outside on a cold day.Shivering is an example. The definition of shivering is when the muscles in your body release heat to maintain our body temperature stable.

Answers to Questions

1. Explain why homeostasis is important to your body's functioning

• homeostasis means internal stability
• also your tissues can support only certain condition or set points and we need to regulate this conditions

2. Give three examples of ways your skin helps maintain homeostasis in your body.

• it helps cushion internal organs against physical injury
• it provides a barrier against dirt and other microorganisms that may hurt us
• it insulate the body on cold circumstances

3. Explain one way that your body maintains a constant temperature while outside on a cold day.

• shivering is an example, it is caused by contractions of skeletal muscles, these then release heat that helps make you body stabilize your temperature on a cold day

section 27.3 questions

1. Explain why homeostasis is important to your body's functioning
because your tissues can only survive within a narrow range of conditions.
2. Give three examples of ways your skin helps maintain homeostasis in your body.
it regulates body temperature, it is a protection, and it provides a barrier agaisnt dirt and microorganism entering your body.
3. Explain one way that your body maintains a constant temperature while outside on a cold day.
by shivering, when your muscles release heat.

Assignment one: Read section 27.3 of the online Biology book. Answer the following questions and provide constructive feedback to at least three other learners.

1. Explain why homeostasis is important to your body's functioning.
2. Give three examples of ways your skin helps maintain homeostasis in your body.
3. Explain one way that your body maintains a constant temperature while outside on a cold day.

Assignment one: Read section 27.3 of the online Biology book. Answer the following questions and provide constructive feedback to at least three other learners.

1. Explain why homeostasis is important to your body's functioning.
2. Give three examples of ways your skin helps maintain homeostasis in your body.
3. Explain one way that your body maintains a constant temperature while outside on a cold day.