This is a draft cheat sheet. It is a work in progress and is not finished yet.
Respiratory System Function
To move fresh air into your body while removing waste gases (carbon dioxide). Once in the lungs, oxygen is moved into the bloodstream and carried through your body. |
Parts of the Respiratory System
Nose |
pharynx (throat) |
larynx (voice box) |
trachea (windpipe) |
bronchi |
lungs |
Circulatory System Function
The circulatory system, also called the cardiovascular system moves oxygen and nutrients to your body's cells to use for energy, growth and repair. It also removes carbon dioxide and other waste products that your cells do not need. |
Circulatory System 101
Blood low in oxygen collects in the heart's right atrium |
The high in oxygen blood moves to the left atrium |
It moves into the right ventricle and gets pumped into the lungs |
It moves into the left ventricle. The ventricle pumps the blood through the aorta and arteries.. |
Red blood cells pick up the oxygen and get rid of the carbon dioxide |
The blood gathers nutrients from the small intestine |
You then exhale the carbon dioxide |
The blood enters the capillaries and makes contact with tissue and cells, where it delivers oxygen and removes carbon dioxide and waste. |
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The blood travels back to the heart's right atrium and they cycle starts again. |
Digestion
Digestion is the process of breaking down complex foods into simple nutrients that the body can absorb. |
Physical and Chemical Digestion
Physical Digestion |
Chemical Digestion |
Slicing, grinding and mixing. Breaking substances into smaller pieces |
Using chemical reactions to convert substances into simpler chemicals |
No new substances are introduced |
So that nutrients can be easily absorbed |
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Muscles that aid the respiratory system
Lungs are not muscles and can't move on their own. They are helped by the diaphragm and the intercostal muscles between the ribs. |
Breathing 101
What happens when we breathe in |
What happens when we breathe out |
Inspiration Happens |
Expiration Happens |
You breathe in by contracting your diaphragm. This causes the chest to expand, drawing air in through your nose. |
The diaphragm relaxes |
The intercostal muscles contract to make room for the air. |
The intercostal muscle relaxes and the air is forced out through the lungs. |
Air then passes into through the upper airways, including the trachea (windpipe) and bronchi to reach your lungs. |
Our chest becomes smaller as all the air is gone. |
Key parts of circulatory system
Blood |
Made up of red and white blood cells |
The heart |
a muscular organ that pumps blood to all parts of the body |
Blood vessels |
Includes arteries, capillaries and veins to carry blood pumped by the heart |
Difference between arteries and veins.
Arteries |
moves blood away from heart |
Veins |
carries blood to the heart |
The Digestive System
A group of organs that food passes through and is broken down called the Digestive tract |
Other organs that help digestion saliva glands, liver and pancreas |
Digestive Tract
Stomach |
The stomach is a large muscle that breaks down food with acid |
Small Intestine |
An 11-foot coil of tube where most of the nutrients of food are absorbed |
Large Intestine |
Main job is to extract water from the digested food. Bacteria produce enzymes that break down complex carbs |
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