How human body works and keeping it healthy

  

Date Posted: 1/19/2018 2:10:02 AM

Posted By: circle p  Membership Level: Bronze  Total Points: 87

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BACKGROUND INFORMATION

In order to keep working,the human body needs to:
*Stay upright and be able to move about
*Take in enough air to breathe properly
*Take in enough food and water to feed the body and keep it going
*Regularly get rid of any food and water and air that it does not need
*Feel and respond to its environment and what it needs
*Replace and repair parts that are injured or unhealthy and continue to grow
*Fight infections or germs that enter the body

The body is made up of alot of parts. Each part has its own job in keeping the body working.The parts are known as systems and they are;
>The musculo-skeletal system(bones and muscles)
>The respiratory system (Lungs and breathing)
>The digestive system(stomach and bowels)
>The circulatory system(heart and blood)
>The urinary system(kidney and bladder)
>The nervous system(brain and nerves)
>The reproductive system(Womb,vagina and penis)
>The immune system(the parts of the body that fight
sickness)

In first aid,the systems that need most urgent attention are the respiratory and circulatory systems.

The respiratory system

Breathing air keeps us alive.If a person stops breatbing,he/she will die if they do not start to breathe again soon.It is usually only in an emergency situation when breathing stops completely, for example if someone is injured or if their airway is blocked.

We breathe with the respiratory system.
Breathing is also called respiration.The respiratory system pulls air into the lungs and pushes it out again.It does this to bring fresh air as close as possible to the blood,so that the blood can absorb oxygen. Our bodies need oxygen to work properly, and we need to get rid of carbon dioxide. The lungs are the place where oxygen absorbed into the blood,and carbon dioxide is taken out of the blood.

When we breathe in the air move down the trachea(the windpipe)to the lungs.Big airways called bronchi,take the air from the trachea into

the lungs.Inside the lungs, smaller airways(called bronchioles)takes the air to thousands of little air sacs(called alveoli)

In the alveoli,the air comes into close contact with blood in small blood vessels callee capillaries which surround the air sacs.

Oxygen passes from the air in the alveoli into the blood,and carbon dioxide passes out of the blood into the alveoli.The capillaries take the oxygen with the blood to diffrent parts of the body.

Normally an adult who is resting needs to take 10 to 20 breaths every minute to get enough oxygen into his or her blood. This could be less when sleeping or more when exercising. If someone is taking less than 10 breaths or more than 30 breaths every minute,they are not breathing normally. Adults who are taking more than 40 breaths a minute need professional medical care as soon as possible.You need to be able to tell the breathing that is normal and breathing that is not normal.

What can go wrong with the respiratory system
•the respiratory system could become injured.
•the airways of the respiratory system could become blocked, e.g.from choking or swelling caused by illness or an allergy or asthma.
•the respiratory system can get infected or become diseased.

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