Unicellular organisms use this method for gas exchange.
What is diffusion?
100
Lungs are found within this human body cavity.
What is the thoracic cavity?
100
This law explains what happens to pressure as volume changes.
What is Boyle's Law?
100
Too high a breathing rate that causes carbon dioxide levels that are too low.
What is hyperventilation?
100
All respiratory surfaces have this in common.
What is moisture?
200
Insects use a series of tubes connected to the atmosphere for gas exchange.
What is the tracheal system?
200
This vessel carries oxygenated blood back to the heart.
What is pulmonary vein?
200
This substance controls human breathing rates.
What is carbon dioxide?
200
Any disease/disorder that gets in the way of breathing.
What is chronic obstructive pulmonary disease?
200
Ventilation uses this feedback mechanism to fine tune blood gas levels.
What is negative feedback?
300
Gills are very efficient at gas exchange since they use this system that allows blood that is low in oxygen to flow against water that is high in oxygen.
What is the countercurrent exchange system?
300
This is what the thoracic cavity does when the diaphragm contracts.
What is expands?
300
These sensors detect changes in pH in an effort to maintain respiratory homeostasis.
What are chemoreceptors?
300
Alveoli increase in size and decrease in elasticity.
What is emphysema?
300
Maximum amount of air that can be expired AFTER a maximum inspiration.
What is vital capacity?
400
Amphibians use this system to maximize gas exchange for them.
What is cutaneous respiration?
400
Most of the carbon dioxide in humans is transported as this substance.
What is bicarbonate ion?
400
This area of the CNS controls breathing rate.
What is the medulla oblongata?
400
Cells in lungs do not obey normal cell cycle signals.
What is lung cancer?
400
As carbon dioxide increases, this is what happens to the amount of acidity produced.
What is increases?
500
___ have the most efficient respiratory systems since air flows in ___ direction.
What is birds and one?
500
As muscles become more metabolically active, carbon dioxide levels increase. Ultimately, this is what will happen to oxygen.
What is increased oxygen unloaded?
500
According to Fick's Law, these three factors affect diffusion rates.
What are surface area, concentration, and distance?
500
NO causes blood vessels to dilate, resulting in drastic decreases in blood pressure.
What is septic shock?
500
As temperature decreases, this is what happens to the amount of oxygen delivered to cells.