Respiratory+System+Notes-Faith

__Respiration__

 * need to get oxygen in our system to get energy
 * helps us breath in and out so oxygen can be pumped thought body and carbon dioxide can be removed from the blood stream (made up of many different organs)
 * they(food and oxygen) need to come together to create energy
 * takes energy from food with the help of oxygen is called cellular respiration
 * food (glucose)+O2 (oxygen gas/electron magnet)=release energy (cellular respiration)
 * waste product is Carbon dioxide and water
 * O2=worst free radical almost ever
 * Happens in all of our cells
 * nose
 * hair
 * mucus
 * sinuses
 * pharynx
 * trachea-windpipe or esophagus
 * 2 lungs=bronclus, bronchillos, air sac (alveoli)


 * gas exchange to the blood
 * lungs expand and contract in response to changes in pressure inside the chest cavity
 * 400,000,000 alveoli
 * look like a bunch of grapes
 * [[image:resp.jpg width="560" height="550"]]

__**Fermentation**__

 * take the food and without the oxygen we can get energy but not a lot (can only live for a little while)
 * food=little energy
 * the waste is carbon dioxide and lactic acid

__**The Heart**__
=**__Pulse__**=
 * has four chambers
 * 2 atria
 * 2 ventricles
 * blue side called the right side
 * red side called the left side
 * there is a left ventricle and left atrium on the right side if you are looking at someone else's heart
 * right side of the heart receives the blue blood because it is doesn't have oxygen
 * the veins bring blood to the heart (doesn't have oxygen)
 * first place that blood goes is from a vein to the right atrium
 * when the heat relaxes blood goes in and when it contracts the blood goes out of the ventricles
 * then from right ventricle to the lungs when the heart contracts
 * oxygenated (red blood) from lungs enters the left atrium when heart is relaxed
 * when heart contracts again red blood leaves the left ventricle through arteries
 * veins-blue
 * rights atrium-blue
 * right ventricle-blue
 * lungs-red
 * left atrium-red
 * left ventricle-red
 * arteries-red
 * feeling the pulse of an artery every time the heart contracts
 * lub DUB sound-hearting the sound of the valves opening and closing (between the atrium and ventricle and between ventricle and the aorta)
 * **Blood Pressure**
 * normal number is 120/80
 * first number trying to figure out how much pressure is in the blood to get through (called systole)
 * lower number is the blood pressure when the heart is relaxed (called diastole)