Stuff You Should Know How Sneezing Works
Aug 25, 2020
Ever wondered why we sneeze? This lively discussion covers the science behind this involuntary reflex, revealing that even lizards sneeze! The hosts share amusing anecdotes while exploring the neurological mechanisms involved and debunk common myths. They dive into quirky sneezing triggers, like photic sneezing, and the cultural etiquette surrounding it. With a blend of humor and fascinating facts, they highlight the reflex's impact on daily life and how it varies among species—and people!
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Nose Filtration System
- The human nose acts as an efficient filtration system, using narrow passages to create turbulence.
- This turbulence forces inhaled air to the sides of the nasal passages, where cilia and mucus trap particles.
Sneeze Trigger
- Inhaled particles that get stuck in the nasal mucosa irritate specialized cells like mast cells and iranophils.
- These cells release histamines, triggering an allergic reaction and sending signals to the brain's sneeze center.
Sneeze Center
- The sneeze process takes about a second, sending a chemical message to the brain's sneeze center in the lateral medulla.
- The lateral medulla reacts to this signal by initiating the sneeze to expel the irritant.