Science
What is the fastest muscle movement in the human body?
- Blinking
- Swallowing
- Nodding
The answer is Blinking. About a tenth of a second.
Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid. A single blink consists of the closing of the eyelid or inactivation of the levator palpebrae superioris and the activation of the palpebral portion of the orbicularis oculi. It is an essential function of the eye that helps spread tears across and remove irritants from the surface of the cornea and conjunctiva.
Wikipedia · Blinking