Respiratory Anatomy
Breathing Process
Respiratory Diseases
Gas Exchange
Respiratory System Functions
100

This dome-shaped muscle is the main muscle used in breathing.

What is the diaphragm 

100

This gas is taken into the body during respiration and is necessary for cellular respiration.

What is oxygen?

100

This common illness is caused by viruses and affects the upper respiratory tract.

What is the common cold?

100

This process moves oxygen from high to low concentration in the lungs.

What is diffusion?

100

This is the act of taking air into the lungs.

What is inhalation?

200

These tiny air sacs in the lungs are where oxygen and carbon dioxide are exchanged with the blood.

What are the alveoli?

200

This waste gas is expelled from the body during exhalation.

What is carbon dioxide?

200

This disease causes the airways to become inflamed and narrowed, leading to difficulty breathing.

What is asthma?

200

This is the percentage of oxygen in atmospheric air.

What is 21%?

200

This is the act of pushing air out of the lungs.

What is exhalation?

300

These tiny blood vessels surround the alveoli for gas exchange.

What are capillaries? 

300

This part of the brain controls the rate and depth of breathing.

What is the medulla oblongata?

300

This long-term disease is often caused by smoking and leads to difficulty exhaling air from the lungs

What is chronic obstructive pulmonary disease (COPD)?

300

The process of moving air into and out of the lungs is called this.

What is ventilation?

300

This is the amount of air remaining in the lungs after a forceful exhalation.

What is residual volume?

400

This thin membrane covers the lungs and lines the chest cavity, reducing friction during breathing.

What is the pleura?

400

To prevent mucus plugs and maintain airway patency, patients with a stoma must often use this technique to clear secretions.

What is suctioning?

400

This infection of the alveoli can be caused by bacteria, viruses, or fungi and leads to fluid in the lungs.

What is pneumonia? 

400

The majority of oxygen in the blood is transported by binding to this molecule in red blood cells.

What is hemogloblin?

400

This action is the body's automatic response to clear the airways of irritants or mucus.

What is coughing?

500

This ring-shaped cartilage forms the base of the larynx and is the only complete circular cartilage of the airway, providing structural support and protection.

What is the cricoid cartilage?

500

During forced exhalation, these internal muscles contract to pull the ribs downward, helping to push air out of the lungs.

What are the internal intercostal muscles?

500

This condition occurs when intrapleural pressure equals atmospheric pressure, causing lung collapse.

What is a pneumothorax?

500

These monitor the levels of oxygen, carbon dioxide, hydrogen ion concentration and the pH of the CSF.  

What are chemoreceptors? 

500

This action often occurs when the diaphragm contracts involuntarily, causing a sudden intake of air.

What is hiccuping?

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