THE PATH OF AIR
What is the trachea?
The trachea is the windpipe. It leads from the pharynx to the bronchi and carries air to each lung.
What are the lungs?
The lungs are a pair of two organs that act as an air filter. They take in Oxygen and release Carbon dioxide.
What is asthma?
Asthma occurs when the bronchioles narrow and make it difficult for a person to breathe. Asthma is usually triggered by dust or pollen.
What is the Respiratory system?
The respiratory system is a group of organs and muscles that work together to bring in oxygen and release carbon dioxide.
What is Breathing?
The act of inhaling or exhaling that is aided by the diaphragm and rib muscles.
What is the Pharynx?
The Pharynx is the tube that connects the nasal and oral cavities to the trachea and esophagus. It is also called the throat.
What is the name of the two tubes that connect the trachea to each lung
Bronchi
What is the leading cause of lung cancer? Describe how this happens.
The leading cause of lung cancer is smoking. Toxins from cigarettes build up in the lungs.
Are the lungs a muscle?
NO
What happens when you inhale?
The diaphragm contracts and moves down and the rib muscles contract and lift the ribs to open the chest cavity.
What is the larynx?
The larynx is your voicebox. It is the section of your throat that contains the vocal cords and vibrates to produce sound.
What are bronchioles?
A bronchus branches off into multiple bronchioles that spread throughout the lungs. Bronchioles have alveoli at the end of them.
What does SARS stand for?
Severe Acute Respiratory Syndrome.
What are the rib muscles?
The rib muscles are a set of skeletal muscles that contract to lift the rib cage and relax to lower the rib cage.
What happens when you exhale?
The diaphragm relaxes and moves up and the rib muscles relax and lower the rib cage to push air out of the lungs.
Where does Oxygen enter the body? Describe them.
The nasal or oral cavity is where Oxygen enters the body. The nasal cavity is the hollow space of the nose that offers an air filter (mucus and nose hairs), and the oral cavity is the hollow space of the mouth that has a more direct path to the lungs.
What is an alveoli?
Tiny air sacs at the end of each bronchiole where gas exchange occurs.
What is SARS?
A virus that causes a fever and difficulty breathing.
What is the diaphragm?
The diaphragm is a dome-shaped muscle beneath the lungs that moves up and down to help breathing.
What is gas exchange?
Gas exchange is a process that occurs in the lungs between alveoli and capillaries. Alveoli give capillaries oxygen and capillaries give alveoli carbon dioxide.
What is the Epiglottis?
The epiglottis is a small flap of tissue between the pharynx and larynx. When eating or drinking, the epiglottis closes the airway so no food gets into the airways.
Name the path of air throughout the body.
1) Nasal/Oral Cavity
2) Pharynx
3) Epiglottis
4) Larynx
5) Trachea
6) Bronchi
7) Bronchioles
8) Alveoli
What is Emphysema?
Occurs when the alveoli have been damaged, causing a lack of needed Oxygen.
What is the Cardiac Notch?
The Cardiac Notch is the space near the left lung where the heart is located.
What is cellular respiration?
The process by which Oxygen is used by cells to release energy from the glucose in food. Cells use sugar and Oxygen to create ATP in mitochondria.