Flashcards in Respiratory System Deck (63)
What is breathing?
The exchange of respiratory gasses between an organism and its environment.
Which gas is inhaled and which is exhaled?
Oxygen is inhaled and CO2 is exhaled.
Why is cellular respiration important?
It makes ATP. Oxygen is used in this process.
Why is oxygen important to your cells?
Every cell needs oxygen every single second.
What is gas transport?
The movement of gasses to and from cells.
What is the path of the oxygen?
What organ do we use to breathe?
What is a waste product of respiration?
CO2 which is taken out of your body.
What are nostrils?
The part of the body where the air comes in.
What are nasal cavities made of?
What do the the nasal cavities make?
What is the function of the nasal cavities?
They warm the air to body temperature and trap impurities with the mucous and cilia.
What doesn't happen when one breathes through their mouth?
The air doesn't pass through the nasal cavities and therefore isn't filtered, humidified or warmed.
What is the pharynx?
A path for oxygen that is also a part of the digestive system.
What is the function of the epiglottis?
Prevents you from choking by covering the glottis when you are swallowing (which leads to the larynx then to the trachea)
Where do we want the food to go down and where does it go when we choke?
We want the food to go down the esophagus but there is the chance that it will go down the trachea and get stuck.
Can you breathe and swallow at the same time?
No you can't because of the epiglottis covering the glottis. (Air doesn't go through the glottis when it is covered)
What is the glottis?
An opening for the larynx.
What is the larynx?
Larynx is voice box/ adam's apple, containing the vocal chords. They make one speak when the air goes through and makes the vocal chords vibrate.
What is the trachea?
A tube that leads to the lungs that gets food stuck in it (Choking). The common name is the windpipe. Cartilage makes the trachea stronger.
What is the bronchus?
Two branches of trachea that further divide into bronchioles. The C-shaped cartilage here makes the structure stronger to maintain an open airway.
What are the bronchioles?
The 1000's of tubes that branch out from the bronchus in the lungs. THEY ALSO HAVE CARTILAGE TO MAKE IT STRONGER TO KEEP AN OPEN AIRWAY.
What are the lungs?
We breathe with lungs.
What is the diaphragm?
A large muscle that denotes the end of the thorax and beginning of the abdomen. It helps to inhale and exhale.
What are alveoli?
Air sacs that exchange the oxygen with CO2 and eventually relocate the oxygen to the bloodstream. The CO2 leaves the bloodstream and goes to the air cells.
How many sacs are on the end of a bronchiole?
About 20, and millions are in a lung.
What are the alveoli connected to?
Capillaries and the arteries are connected to the alveoli and move the O2.
How much surface area is there for the alveoli?
The surface area is extensive.
How much of the oxygen goes into the bloodstream when we breathe?
25% goes into our bloodstream while the other 75 % exits.