Respiratory System Functions
These tiny structures in the lungs are surrounded by blood vessels and allow for gas exchange.
What are alveoli?
smaller branches from the bronchi that enter the lungs
Bronchioles
This organ is responsible for pumping blood throughout your body.
What is the heart?
What is the main organ of the respiratory system?
Lungs
When the heart muscle relaxes, it allows blood to enter. This is called the heart’s ______.
What is relaxation?
These air passages divide from the windpipe at the bottom of the trachea.
bronchi
This muscle under the lungs helps push air in and out by contracting and relaxing.
What is the diaphragm?
These blood vessels carry oxygen-rich blood away from the heart.
What are arteries?
When the heart muscle squeezes, blood is pushed out of the heart. This is called the heart’s ______.
What is contraction?
This happens when something irritates your nose
Sneeze
This tube connects the throat to the lungs, allowing air to pass.
What is the trachea?
This is the term for the number of breaths you take in one minute.
What is breathing rate?
These blood vessels carry blood back to the heart.
What are veins?
The heart’s job is to pump this substance to all parts of the body.
What is blood?
Physical activity causes breathing rate to do what?
Increase
These small branches in the lungs carry air to the alveoli for oxygen exchange.
What are bronchioles?
When we exercise, the need for this increases, which makes us breathe faster.
What is oxygen?
These tiny blood vessels connect arteries and veins and allow for the exchange of oxygen and nutrients.
What are capillaries?
The heart helps move blood, which carries this important gas to body cells.
What is oxygen?
What is the sticky coating that is secreted by cells along your respiratory tract?
Mucus
What are the tiny balloon-like sacs that look like bunches of grapes where carbon dioxide in the blood is exchanged for oxygen?
Alveoli
During inhalation what does the diaphragm do?
contracts
The heart is made of this type of muscle tissue, which allows it to contract and pump blood continuously.
What is cardiac muscle?
This term refers to the number of times your heart beats in one minute.
What is heart rate?
What harmful substance produced by burning materials can damage lung tissue and lead to respiratory issues?
What is smoke?