lesson 2.13: respiratory system - leetz.weebly.com
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Lesson 2.13: Respiratory System
A) Respiratory System Structure & Function Made of nose, mouth, trachea, bronchi and lungs Allows ____________ to enter and ____________ ____________ to leave
B) Path of Air mouth/nose —> ____________ (throat) —> ____________ (voice box) —> ____________ (windpipe) —> ____________ (singular bronchus) —> ____________________ —> ____________ (air sacs)
Trachea is supported by rings of ____________ Keep the trachea ____________, allows air to flow freely
The bronchioles and alveoli are in the ____________ C) Epiglottis
Tissue flap, covers ____________ opening keeps food & liquid from going to lungs
D) Epithelial Cells Line ____________ and ____________ Produce ____________ which catches ____________ Have ____________ (hairlike projections)
Cilia moves mucus up into the ____________ Mucus is ____________ out or ________________
E) Gas Exchange Occurs at ____________
densely covered in ____________ • Oxygen is in the alveolus • That oxygen diffuses into the ____________ • The blood with oxygen goes to the _________________,
where it is pumped to the rest of the body • ____________ ________________ is in the blood • The capillary with the blood is touching the alveolus • The carbon dioxide diffuses from the ________________
into the ________________ • From the alveolus, the carbon dioxide moves up the lung
and is released to the __________________ through the mouth
1) _____________________ 2) _____________________ 3) _____________________ 4) _____________________ 5) _____________________ 6) _____________________ 7) _____________________ 8) _____________________ 9) _____________________
F) Breathing (How to get air into our out of the lungs) Breathing is ________________, and is under the control of:
1) ___________________ : Muscles between ribs, expand and contract chest cavity 2) __________________: Sheet of muscle under ribs
Controlled by part of brain monitoring _______________ ________________ in blood More carbon dioxide sends signals to the diaphragm, intercostals & heart Breathing and heart rate ___________________ The opposite happens if a lot of oxygen is in the blood
G) Respiratory System in Fish fish have gills instead of lungs gills are exposed directly to ____________ gills have many _________________ oxygen ____________ from water into blood carbon dioxide diffuses from blood to water
H) Tuberculosis (TB) • ___________________ disease - easily passed from person to person • caused by ____________________ that grow in your lungs • is fatal if left untreated • looks like ___________________ on an x-ray, so diagnosis depends on analyzing lung
or stomach ______________________ • can be _____________________ for a long
time
Inhalation ExhalationRib cage
Diaphragm
Chest cavity size
Chest cavity pressure
movement of air !!