You can trade the five dots that indicate your iPhone's signal strength for a number. No jailbreak required. If you are a numbers person, you may like this iPhone hack that replaces the five dots in the upper-left corner of your iPhone that indicate the strength of your cellular signal with a numerical value. It does not require you to jailbreak your phone -- all you need to do is jump in and out of the hidden Field Test mode.
The subglottis or subglottic region is the lower portion of the larynx, extending from just beneath the vocal cords down to the top of the trachea. The structures in the subglottis are implicated in the regulation of the temperature of the breath.
The carotid body (carotid glomus or glomus caroticum) is a small cluster of chemoreceptors and supporting cells located near the fork (bifurcation) of the carotid artery (which runs along both sides of the throat).he output of the carotid bodies is low at an oxygen partial pressure above about 100mmHg (13,3 k Pa) (at normal physiological pH), but below 60mmHg the activity of the type I (glomus) cells increases rapidly due to a decrease in hemoglobin-oxygen saturation below 90%.