Which parts of the body does air enter?
What are the nose and the mouth?
Where does gas exchange take place?
What is the alveoli?
What is breathing out called?
What is exhalation?
What parts of the respiratory system are the yellow lines pointing to?
What are the mouth and nose?
What does the respiratory system take in?
What is oxygen?
What is the long tube made of muscle and cartilage that air travels into after entering the body?
What is the trachea?
Oxygen in the alveoli enters the blood through what?
What is breathing in called?
What is inhalation?
What part of the respiratory system is the yellow line pointing to?
What is the trachea?
What does the respiratory system release?
What is carbon dioxide?
What are the two smaller tubes that the trachea splits into in the chest and that take air to each of the lungs?
What are bronchi?
Blood with what travels toward the heart and the rest of the body?
Hint: think what the respiratory system brings in
What is oxygen?
What contracts to make more room for the lungs to expand?
What is the diaphragm?
What part of the respiratory system is the yellow line pointing to?
What is the diaphragm?
What is the skeletal muscle that contracts to take in oxygen and relaxes to release air from the lungs?
What is the diaphragm?
What are the smaller branches that the bronchi split into?
What are bronchioles?
Cells combine the oxygen traveling the body with nutrients to produce energy. This creates what waste gas?
What is carbon dioxide?
When the diaphragm relaxes, does is create more or less space in for the lungs?
Less space
What parts of the respiratory system are the yellow lines pointing to?
What are the bronchus and the bronchiole?
What are the tiny blood vessels that cover the alveoli called?
What are capillaries?
What are the air sacs on each bronchiole called?
What are alveoli?
What is the plural of bronchus?
What three parts expand and contract during inhalation and exhalation?
Hint: one of them are bones
What are the lungs, ribcage, and diaphragm?
What is 1 pointing to? What is 2 pointing to?
1) What is the alveolus?
2) What is the capillary?
When the diaphragm relaxes, does air leave or enter the lungs?