Organs
This organ is called the voice box.
Larynx
Where does air FIRST enter the body?
Mouth or nasal cavity
What is the main job of the respiratory system?
To bring in oxygen to organs and release carbon dioxide
Where in the lungs does gas exchange happen?
The alveoli
False - diaphragm, trachea, nasal cavity are involved too
What are the MAIN organs of the respiratory system and what organ do they connect to?
Lungs - they connect to the trachea
Does air pass through the pharynx or larynx first?
Pharynx! (throat)
What is the role of the pharynx and what is it connected to?
A passage for air to pass through - it is connected to the nasal cavity on one side and the larynx on the other side
What process allows oxygen and carbon dioxide to switch places in the lungs?
Diffusion
The diaphragm moves UPWARD when you breath in
False - it moves downward, making room for the lungs to fill with air
The diaphragm moves down to leave room for the lungs to fill with air, and relaxes (moves up), when we exhale air from our lungs.
Why is it helpful for air to pass through the nasal cavity before going to the lungs?
The nasal cavity warms, moistens and filters the air
Describe carbon dioxides role in the respiratory system (where is it, and how does it leave our body?)
It moves from the blood into the lungs and is breathed out.
HOW does diffusion allow oxygen and carbon dioxide to move during gas exchange?
T/F: Capillaries are responsible for carrying oxygen into the alveoli. IF false, what do capillaries do?
False - capillaries carry blood, oxygen moves from the alveoli into the capillaries so the capillaries can carry oxygen to organs in the body.
Name the COMPLETE path that air travels through in the respiratory system (there are 7 structures I am looking for)
1. Nose OR mouth
2. Pharynx
3. Larynx
4. Trachea
5. Bronchus/Bronchi
6. Bronchioles
7. Alveoli
The larynx - The voice box
How does the diaphragm help with breathing?
When we breath in, the diaphragm contracts, leaving room for the lungs to fill with air. When we breath out, the diaphragm expands helping to push the air out of the lungs.
Why is carbon dioxide able to move from the blood into the alveoli?
Because there is less carbon dioxide in the alveoli so it is able to move through diffusion
T/F: The larynx connects the nasal cavity and mouth to the larynx, and the pharynx is connected to the trachea.
False! The pharynx connects the nasal cavity and mouth to the larynx, and the larynx is connected to the trachea.
Answer ALL questions.
1. What is located at the ends of each bronchiole?
2. What do they look like?
2. What is the job of these structures?
2. Little air sacs
3. Oxygen exits the alveoli into the blood so it can be taken to organs. Carbon dioxide goes back into the alveoli so it can follow the respiratory path to be breathed out.
Explain how air travels from the mouth/nose all the way to the alveoli.
If alveoli were not functioning properly, how would this affect the respiratory system?
Alveoli are necessary for gas exchange, and without them, oxygen and carbon dioxide cannot move between blood and air - resulting in cells not receiving oxygen.
Describe what happens inside the body when oxygen enters the lungs during breathing.
Oxygen enters the alveoli, diffuses into the blood and is carried by the capillaries in the blood to cells in the body.
T/F: EXPLAIN WHY this statement is either true or false:
Bronchioles are the final destination for air in the lungs before it enters into the bloodstream.
False - bronchioles carry air to the alveoli, but gas exchange happens in the alveoli, not the bronchioles.