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Respiratory system

Respiration, gas exchange, functions of the breathing system

QuestionAnswer
Are respiration and breathing the same thing? No
What is respiration? Respiration is the release of energy from food in the cell of an organism
What is breathing? Breathing is this taking in of oxygen for respiration and letting out carbon dioxide
What is the function of the epiglottis? Prevents food from going down the trachea
What is the function of the trachea? Takes air to the lungs
What is the bronchus? Trachea splits into two tubes (bronchioles), one goes into each lung
What is the function of the bronchioles? Carry air to the alveoli
What are the alveoli? Tiny air sacs surrounded by cappillaries
What is the function of the diaphragm Relaxes and contracts during breathing
What is the function of the rips Protect the lungs
What is the function of the intercostal muscle? Moves the chest during breathing
What is the function of the pleural membrane? Helps lungs move easier
Where does gas exchange happen? The alveoli
How does oxygen travel through the blood? Red blood cells
How does carbon dioxide travel through the blood? Plasma
What is diffusion? The movement of a substance from where it is in high concentration to where it is in a lower concentration
Exchange of gases=? Diffusion
What is the first step to inhalation? Intercostal muscle contracts-ribs move up and out
What is the second step to inhalation? Diaphragm contracts-flattens down
What is the third step in inhalation? Volume in the ribcage increases
What is the fourth step to inhalation? Pressure in the ribcage decreases
What is the fifth step to inhalation? Air is sucked in
What is the first step to exhalation? Intercostal muscle relaxes-ribs move down and in
What is the second step to exhalation? Diaphragm relaxes-arches up
What is the third step to exhalation? Volume in the ribcage decreases
What is the fourth step to exhalation? Pressure in the ribcage increases
What is the fifth step of exhalation? Air is forces out
How many times does the average person breath per minute? 12-14
Created by: M.Higgins
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