Bronchi
The air passages that lead into the lungs. They carry air during breathing.
Alveoli
Tiny air sacs where gas exchange occurs. They allow oxygen to enter the blood.
Dyspnea
Difficulty breathing. It may indicate respiratory problems.
Wheezing
A high pitched sound during breathing. It often indicates narrowed airways.
Cough
A reflex that clears the airways. It may be caused by irritation or infection.
Sputum
Mucus produced by the lungs. Its color and thickness can indicate illness.
Hypoxia
Low oxygen levels in the tissues. It can cause confusion and fatigue.
Hyperventilation
Breathing too fast. It can reduce carbon dioxide levels.
Apnea
A temporary stop in breathing. It may occur during sleep.
Respiratory Rate
The number of breaths per minute. It helps assess breathing status.
Oxygen Therapy
The use of supplemental oxygen. It helps maintain safe oxygen levels.
Inhaler
A device that delivers medication to the lungs. It helps open airways.
Nebulizer
A machine that turns medication into mist. It helps people who cannot use inhalers.
Bronchodilator
A medication that relaxes airway muscles. It improves airflow.
Pneumonia
An infection of the lungs. It can cause fever cough and breathing problems.
COPD
A chronic lung disease that makes breathing difficult. It includes chronic bronchitis and emphysema.
Asthma
A condition that causes airway inflammation. It can lead to wheezing and shortness of breath.
Ventilation
The movement of air in and out of the lungs. It supports gas exchange.
Chest Expansion
The movement of the chest during breathing. Reduced expansion may indicate illness.
Pulse Oximetry
A test that measures oxygen saturation. It helps monitor respiratory status.