Final answer:
The root that means to breathe is 'Pneum-'. It is used in various medical terms related to the lungs and respiratory system, such as 'pneumonia'. Other related respiratory concepts include external respiration, internal respiration, and pulmonary ventilation.option a is correct.
Step-by-step explanation:
The root that means to breathe is 'A. Pneum-'. This prefix is derived from the Greek word 'pneuma', which means breath or air, and is commonly used in medical terms related to the respiratory system. Examples of words that use this root include 'pneumonia', which is an infection of the lungs leading to inflamed air sacs, and 'pneumothorax', which refers to an abnormal collection of air in the pleural space between the lung and chest wall, causing the lung to collapse.
We can also explore related concepts to better understand the context of this root:
- External respiration: The exchange of gases between the atmosphere and the blood through the alveoli.
- Internal respiration: The exchange of gases between the blood and the body cells.
- Pulmonary ventilation: The process of moving air into and out of the lungs.