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 subclavian arteries are a pair of large arteries in the thorax that supply blood to the thorax, head, neck, shoulder and arms. Anatomy of the axillary artery and its branches. Course. On the left side of the body the subclavian comes directly from the aortic arch whereas on the right side it arises from the brachiocephalic trunk.