Neither. It's a reflex of the diaphram, which is the film of skeletal muscle separating the chest cavity from the abdomen. It controls both lungs, neither of which can inflate or deflate on their own.
The typical written expression for a yawn sound is "ho hum."
NO
There isn't a specific term for a person who makes you yawn. Yawning is a natural physiological response that can be triggered by various factors, including fatigue, boredom, or seeing someone else yawn.
A yawnfest is something which makes someone yawn.
yawn
Yawning is believed to be a reflex triggered by things like boredom, fatigue, or changes in brain temperature. It may help increase oxygen intake and blood flow to the brain, and regulate carbon dioxide levels.
A yawner is someone who yawns, or, figuratively, something which makes someone yawn.
When you yawn, your lungs expand as you take a deep inhalation, filling them with air. This process increases the intake of oxygen and helps to remove carbon dioxide. Yawning may also help to stretch the lung tissue and improve lung function. Additionally, it can trigger a reflex that promotes relaxation and may help regulate brain temperature.
Yes, turtles do yawn. Yawning in turtles is believed to help regulate their oxygen intake and maintain proper lung function. It may also serve as a way to stretch their jaw muscles and relieve tension.
Yawning is contagious due to mirror neurons in the brain. When we see someone else yawn, these neurons are activated, triggering us to yawn as well. This phenomenon is believed to be an instinctual form of empathetic behavior.
Sight. If you see someone yawn you start to yawn, if you see someone smile you may start to smile to even blinking or itching can sometimes be contagious by sight.
The sound you hear in your head when you yawn is likely the stretching of the jaw muscles and surrounding tissues, not an actual sound. Yawning typically doesn't produce a physical sound within the head.