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.
The trachea is surrounded by bands of cartilaginous tissue to prevent it collapsing in on itself, which would then cut-off our airway and prevent us from breathing.hey are C-shaped, with the opening in the back so that when you swallow food, the esophagus expands into the area of the trachea to allow the food (called a bolus) to go down â¦ . This process is called deglutition.