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Immune System and Respiration
Biology I
31
Biology
10th Grade
03/25/2009

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Term
External Respiration
Definition
exchange of gases between the atmosphere and the blood.
Term
Internal Respiration
Definition
gas exchange between the blood and the body cells.
Term
Cellular Respiration
Definition
chemical process that breakds down glucose into energy that cells can use.
Term
Lungs
Definition
site of gas exchange.
Term
Pleura
Definition
a membrane that surrounds and protects the lungs.
Term
Air Filters
Definition
filters dust particles from the air, adds moisture and warmth to the incoming air.
Term
Pharynx
Definition
Passageway for food and air (back of throat).
Term
Epiglottis
Definition
flaps of cartilage opens to allow air to enter the trachea, closes to keep food from entering the trachea.
Term
Larynx
Definition
voice box; produces sound as air flows through.
Term
Trachea
Definition
windpipe-tube leading from the mouth to the lungs.
Term
Bronchi
Definition
trachea branches into these.
Term
Bronchioles
Definition
branches of bonchi.
Term
Aveoli
Definition
balloon like air sacs located in clusters at the end of the bronchioles.
Term
Hemoglobin
Definition
carries oxygen throughout the body.
Term
Diaphram
Definition
sheet of muscle; separates the lungs from the rest of the abdomen.
Term
Inspiration
Definition
inhaling; taking air into the lungs.
Term
Expiration
Definition
exhaling; air expelled from the lungs.
Term
Tidal Volume
Definition
amount of air exhaled with each breath (.5 L).
Term
Vital Capacity
Definition
Maximum amount you can FORCEFULLY exhale (3.5L - 4.5L).
Term
Normal Breathing
Definition
16-24 times a minute.
Term
Pathogen
Definition
any agent that causes an infection.
Term
Nonspecific Defence
Definition
includes the skin and mucous membrane of the nose and mouth.
Term
Phagocyte
Definition
engulfs foreign substances.
Term
Specific Defence
Definition
attack a specific pathogen.
Term
T-cells
Definition
attacks antigens directly.
Term
B-cells
Definition
produces antibodies that bind to and destroy antigens.
Term
H-cells
Definition
helps to initiate an attack.
Term
Memory Cells
Definition
stay in blood; if the same antigen appears again after attack, it destroys it.
Term
Suppresor T-cell
Definition
stops or slows down the attack on an antigen.
Term
Passive
Definition
present at birth.
Term
Vaccinations
Definition
drugs that fight bacterial infections.
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