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R, E, and D Systems
| Question | Answer |
|---|---|
| Breathing | movement of the chest that brings air into the lungs and removes waste gases |
| Respiration | uses oxygen to break down glucose and release energy |
| Pharynx | (throat) opening that food, water, and air enter |
| Epiglottis | flap that covers lower end of glottis and keep food and liquid from entering your airway |
| larynx | branches off from pharynx (throat); air enters here; contains vocal cords |
| trachea | after larynx; long tube that contains cartilage to prevent it from collapsing |
| bronchi | branch off from trachea; carries air to lungs |
| bronchioles | smaller branches off of bronchi |
| *Alveoli | tiny sacs at the end of bronchioles; where O2 and CO2 are exchanged take place, makes up lungs |
| Diaphragm | a muscle beneath your lungs that contracts and relaxes to move gases into and out of lungs |
| How does the diaphragm work when you inhale? | when you breath in (inhale) the diaphragm contracts (tightens) and move downward; this allows lungs to take in more O2 |
| How does the diaphragm work when you exhale? | when you breath out (exhale) the diaphragm relaxes and moves upward; this allows the lungs to release CO2 |
| Emphysema | alveoli enlarge and an enzyme causes them to breakdown; gases cannot be exchanged; heart has to work harder to pump O2 to body; body becomes low in O2 and high in CO2 |
| Define excretion | process of removing wastes and excess products from the body |
| What are 3 ways that excretion occurs in the body? | 1) sweating 2)lungs release CO2 and H2O when you exhale 3)Urinary system removes waste from the blood |
| What is the job of kidneys? | clean blood to form urine |
| How much blood do the kidneys filter? | 2,000 liters of blood a day |
| How is blood filtered? | 1) When blood enters the kidneys, waste forced out of blood into kidneys. Water and nutrients move back into blood. Concentrated mixture of waste materials is left behind in nephron. 2) urine in the nephrons goes to urinary bladder where its stored |
| (...continued...) how is blood filtered (step 3)? | 3) urination is the process of expelling urine from the body. |
| urine | the yellow fluid that remains in the nephrons |
| urinary bladder | where urine goes to be stored before urination |
| urination | the process of expelling urine from the body |
Created by:
spuent
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