Evening Republican, Volume 22, Number 165, Rensselaer, Jasper County, 15 July 1919 — Explaining Knockout Blow. [ARTICLE]

Explaining Knockout Blow.

When the lower jaw is struck on its point, especially with an uppercut, the bony portion of the ear inside is driven forcibly upward into the glenoid cavity of the skull, above and be hind which is situated the delicate labyrinth of the inner ear. The jawbone strikes hard upon the thin plate of bone that supports these sensitive organs and gives a shock to the semi-circular canals that is instantly transmitted by them to the bulb, producing dizziness, nausea and momentary paralysis. This explains why a sideways blow on the jaw is more effective as a knockout than one delivered directly upon the point of the jaw. For the shock of ft sideways blow is received in one glenoid cavity,'? that on the side opposite the one on which it is struck, while the shock of a blow in the center is divided between the cavities on the two sides.