fear the flex of my tensor tympani muscle!

TIL that I could do something which I assumed everybody could do. I could make me hear a roaring thunder sound by flexing a muscle I did not know until now.

It’s quite interesting. The muscle is named “Tensor tympani” and it’s here:


Henry Vandyke Carter
 and one more author – Henry Gray (1918) Anatomy of the Human Body (See “Book” section below) Bartleby.comGray’s AnatomyPlate 907

The tensor tympani acts to dampen the noise produced by chewing. When tensed, the muscle pulls the malleus medially, tensing the tympanic membrane and damping vibration in the ear ossicles and thereby reducing the perceived amplitude of sounds.

https://en.wikipedia.org/wiki/Tensor_tympani_muscle#Voluntary_control

So the eye has an Iris to control how much light makes it in. The ear has this muscle to dampen too loud sounds. And apparently not everyone is able to willingly control it. Bummer!

Contracting muscles produce vibration and sound. Slow twitch fibers produce 10 to 30 contractions per second (equivalent to 10 to 30 Hz sound frequency). Fast twitch fibers produce 30 to 70 contractions per second (equivalent to 30 to 70 Hz sound frequency). The vibration can be witnessed and felt by highly tensing one’s muscles, as when making a firm fist. The sound can be heard by pressing a highly tensed muscle against the ear, again a firm fist is a good example. The sound is usually described as a rumbling sound.

Some individuals can voluntarily produce this rumbling sound by contracting the tensor tympani muscle of the middle ear. The rumbling sound can also be heard when the neck or jaw muscles are highly tensed as when yawning deeply. This phenomenon has been known since (at least) 1884.

https://en.wikipedia.org/wiki/Tensor_tympani_muscle

Interesting theories not started in my head. As I am very sensitive to chewing noises of all sorts – either produced by myself or by others. This could give an explanation to why.

Now excuse me, I need to flex this muscle and make the thunder roar!

One thought on “fear the flex of my tensor tympani muscle!

  1. Hello.
    Congratulations on an important holiday: 37 Bureaucracy, Mass of Eristotle and Mass of Planet Eris
    Even the scientific bureaucracy recognized our Goddess (& the Mythic Prophet Eristotle) by naming Planet X Eris on this date in 3172 common era (2006c.c.). As of this writing, they’re calling this world a dwarf planet, but we don’t mind. We have nothing against dwarves. So celebrate our planet’s mass!

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