How your lungs work?

- When breathing in or inhaling oxygen your ribs are pulled up and out by muscles. Then your diaphragm is pulled down by muscles making the chest volume bigger.

- When breathing out or exhaling carbon dioxide your muscles start to relax. Your diaphragm relaxes and your chest volume gets smaller.

Brainpop Videos

Smoking:

Tobacco is the main ingredient of a cigarette. NIcotine is the addictive chemical in the cigarrete. Your lungs take in oxygen and take out carbon dioxide. Smokers who try to play sports develop shortness of breathing and cramps. The color of a smoker's lung is more likely to be black because of all the nicotine and chemicals. Cancer,and heart attacks are the long term illnesses that smokers have to deal with. It is difficult to quit smoking because of the nicotine inside the cigarette. Smoking can cause a deadly disease which is lung cancer.

Asthma:

Asthma is a common condition for the lungs. An asthma attack is similar to a heart attack. The direct cause for an asthma attack is swelling and excess mucous in the airways. Inhalers can help people with asthma overcome their attacks because the chemicals in the inhaler make the passage ways to your lungs clear. Living close to a smokestack would be dangerous for people who have asthma. Asthmatics should always carry their inhalers with them because intense stress and anger can cause a asthmatic.  

Respiratory System Workshet

2. Pharynx - Larynx - Trachea - Bronchi - Bronchioles - Alveoli.

3. Esophagus.

4. The hairs in your nasal cavity that push the dirt into the nose. These hairs are called "Cilia".

5.
a) Bronchioles (c)
b) Palate (d)
c) Trachea (b)
d) Alveoli (a)
e) Epiglottis (i)
f) Pharynx (g)
g) Expiration (h)
h) Diahragm (f)
i) Pleura (e)
j) Tidal Volume (j)

6.
B. The muscles between the ribs contract to move the ribs cranially and laterally
D. The diaphragm contracts and flattens
E. The lungs expand to fill up the space created
A. The air pressure in the air tight pleural cavities decreases
C. Air is drawn down the trachea into the lungs

7.
a) True
b) False
c) True
d) True
e) True
f) False
g) True

The Mouth

Saliva begins in your mouth as soon as you smell,taste or even think about food. When you eat food, the saliva breaks down a little bit of the chemicals of the food and make it easier to go through the esophagus. Your tongue helps by pushing the food around while you're chewing with your teeth. When the food is all ready to be swallowed, your tongue pushes a small piece of chewed food, which is usually called bolus, towards the back of your throat and into the opening of the esophagus where the second part of the digestive system process takes place.

Healthy VS. Unhealthy

To decide or see if food is healthy or unhealthy you always have to check the the label to see how many calories or fiber is in that food and you have to check the salt content and fat content. A good example of healthy foods are fruits and vegetables because they have a very low number of calories and high percentage of fiber and they don't have fat or salt content. Their also very healthy because they supply your body with protein and vitamins which is essential to a good diet. A healthy diet is when all your food is balanced like in the food pyramid. An unhealthy diet would be an very high amount of saturated fats, sugars and salts.

Digestive System - Notes

Mouth:

1.  Mechanical digestion – making food into small pieces à easier digest

2. Saliva – chemical digestions à carbohydrates à sugar

                                       Amylase à rice and bread

Slimes, food à slide down the esophagus

 

Esophagus:

Squeezes your food down to stomach.

 

Stomach:

1. Mechanical digestion – churning food

2. Stores food

3. Chemically digest protein – meat

         - Makes acid to help break apart protein (meat)

         - Enzyme pepsin

 

Small Intestine:

Fats – bile from liver/ enzyme lipase  

Proteins - finished being digested – pepsin

Carbohydrates – finished being digested enzyme amylase

Digested food à protein, carbohydrates, fats go into your blood

 

Pancreas:

1. Makes all of your digestive enzymes that go into the small intestine

2. Makes insulin à which causes your cells to suck up the sugar in your blood

 

Liver:

1. Makes bile, which goes to the small intestine to help digest fat

2. Filters your blood

 

Large Intestine (Colon):

-       Stores undigested waste food

-       Absorbs all your water

Why is McDonalds Food Unhealthy?

Eat too many calories makes you fat - 1 big mac meal

More saturated fats ^ Animal fats – blocks up your arteries

Cholesterol à Animals à blocks up your arteries

Too much sodium (salt) à Increases blood pressure