Which term describes a period when no breathing occurs?

• A. Tachypnea
• B. Bradypnea
• C. Apnea
• D. Dyspnea

Answer: (C)

Breathing that stops for a period is called apnea. It means a temporary absence of respiration, often defined clinically as a pause lasting several seconds. This is the best term for describing a period with no breathing.

Tachypnea refers to rapid breathing, bradypnea to abnormally slow breathing, and dyspnea to the sensation or appearance of difficult or labored breathing. Apnea matters because it disrupts oxygen delivery and can have serious consequences, such as during sleep disorders, after anesthesia, or in newborns with immature respiratory control.