Respiratory Organs
The main muscle located below the lungs that contracts to draw air in
Answer: What is the diaphragm?
The gas the body takes in from the air to use for cellular functions
Answer: What is oxygen?
The process of moving air into and out of the lungs
Answer: What is breathing or ventilation?
A common chronic condition where airways become inflamed and narrowed, making breathing difficult.
Answer: What is asthma?
Tiny hair-like structures that line the nasal passages and airways, filtering out dust and other particles.
Answer: What are cilia?
This tube is also known as the "windpipe" and extends downward from the voice box.
Answer: What is the trachea?
The waste gas the body removes from the blood and releases into the air
Answer: What is carbon dioxide?
This is the term for breathing in.
Answer: What is inhalation?
A bacterial or viral infection that causes the tiny air sacs in the lungs to fill with fluid.
Answer: What is pneumonia?
The average adult takes approximately this many breaths per minute at rest (give a range of 12-20).
Answer: What is 12 to 20 breaths per minute?
Tiny air sacs at the end of the bronchioles where gas exchange occurs
Answer: What are the alveoli?
The process by which oxygen and carbon dioxide move between the alveoli and the capillaries (from high concentration to low concentration).
Answer: What is diffusion?
When the diaphragm relaxes, the volume inside the chest cavity decreases, causing this to happen.
Answer: What is exhalation (or breathing out)?
A group of diseases, often caused by smoking, that makes breathing progressively harder, including emphysema and chronic bronchitis.
Answer: What is COPD (Chronic Obstructive Pulmonary Disease)?
This is the scientific term for the voice box, located at the top of the trachea.
Answer: What is the larynx?
The two large air tubes that branch off the trachea and lead directly into the lungs.
Answer: What are the bronchi?
Gas exchange between the air and the blood in the lungs is called this type of respiration.
Answer: What is external respiration?
The muscles between the ribs that contract and pull upward to help expand the chest cavity during inhalation.
Answer: What are the intercostal muscles?
The name for the highly contagious viral infection that can cause severe respiratory symptoms, famously a pandemic in recent years.
Answer: What is COVID-19?
The lungs are the only organs in the human body that can do this action.
Answer: What is float on water?
This small flap of tissue covers the air-only passage when you swallow, preventing food and liquid from entering the lungs.
Answer: What is the epiglottis?
Gas exchange between the blood and the body's cells and tissues is called this type of respiration.
Answer: What is internal respiration?
This is the term for the total volume of air your lungs can hold after maximum inhalation.
Answer: What is total lung capacity?
This is a general term for a type of uncontrolled cell growth originating in the lungs, strongly linked to smoking.
Answer: What is lung cancer?
This measure refers to the volume of air breathed in and out during normal, relaxed breathing.
Answer: What is tidal volume?