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Respiratory system
Respiration, gas exchange, functions of the breathing system
Question | Answer |
---|---|
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 |