Vital Spot No: 22
Neck Artery (mog dongmaeg)
Neck Artery (carotid artery)
At the base of the internal carotid artery is the carotid sinus. Stimulation of the carotid sinus via a slap or a strike, to induce (usually temporary, but sometimes lethal) loss of consciousness is an effective self-defense technique
The carotid sinus contains numerous baroreceptors, the sole function of these baroreceptors is to monitor the pressure of the blood flowing to the brain.
A strike to this area fools the body into believing that the blood pressure is too high. In response to this stimulus, the heart will slow down, this will draw blood away from the brain, which will cause the recipient to pass out.
The vagus nerve runs alongside the carotid sinus at this point. Hence, the blow will also disrupt many of the organs of the body including the lungs, stomach, intestines, and heart. Applying pressure to this point, as in a stranglehold, will also result in a loss of consciousness. This point is very potent and can have fatal effects. The point is also very close to the throat, which may also be affected by the blow.