Breathing And Gas Exchange Flashcards
Lungs are Found in the Chest and are Protected by the __________. They’re Separated From the Digestive Organs Beneath the _____________.
Ribcage…Diaphragm…
What is the Diaphragm?
A Strong Sheet of Muscle.
Ventilating the _______ is Brought about by the Contraction and Relaxation of the Intercostal ___________ Between the Ribs and Diaphragm.
Lungs…Muscles…
When You Breathe in, Oxygen-Rich Air Enters the ________. This Maintains a Steep Concentration Gradient with the _________. Oxygen Continually Diffuses into the Bloodstream Through the Gas Exchange Surfaces of the ____________.
Lungs…Blood…Alveoli…
Breathing Out Removes Carbon Dioxide-Rich Air From the _______, Maintaining a Concentration Gradient, so Carbon Dioxide can Continually Diffuse Out of the _______________ into the Air in the Lungs.
Lungs…Bloodstream…
Lungs are Specially Adapted to Make Gas Exchange More ___________.
Efficient.
Lungs are Made Up of Clusters of __________ that Provide a Large Surface Area which is Important for Achieving the Most Important _____________ of Oxygen and Carbon Dioxide.
Alveoli…Diffusion…
Alveoli has a Rich Supply of Blood ______________, Maintaining a Concentration Gradient in Both Directions.
Capillaries.
Gas Exchange Takes Place Down the _____________ Concentration Gradient.
Steepest.
Layers of Cells Between the Air in the ________ and the Blood in the Capillaries is Very Thin, Allowing ____________ to Take Place Over the Shortest Distance.
Lungs…Diffusion…
