Units of force conversions F (not weight) The force F: Newton N is the SI basic unit of force. 1 N = 1 kg Ã m / sÂ². The unit symbol is N and the symbol of the force is F (force). Force of weight is FG = m Ã g, Mass = m and gravity g = 9.80665 m/sÂ². This program converts English and American measures to metric units.
What is the structure difference of the esophagus and trachea? The esophagus is a smooth tube that when we eat food goes trough the esophagus to the stomach. The trachea (windpipe) is made of cartilaginous rings that when we inhale/exhaleâ¦ air (breath in and out) it goes to the lungs. So if food goes accidentally to your trachea, you choke.
Trachea Conditions. 1  Tracheal stenosis: Inflammation in the trachea can lead to scarring and narrowing of the windpipe. 2  Tracheoesophageal fistula: An abnormal channel forms to connect the trachea and the esophagus. 3  Tracheal foreign body: An object is inhaled (aspirated) and lodges in the trachea or one of its branches.