In adults the narrowest part of the airway is at the level of the vocal chords, in kids it is just below the vocal chords. So when a child chokes it may be more difficult to get the object out. If it is a complete obstruction, no coughing or air moving, then the Heimlich should be started immediately. Continue until the person loses conciousness of the object is removed. If the patient passes out begin CPR. If there is coughing or air moving that makes it a partial obstruction and the person should get emergency care ASAP. Do not try to remove the object as this could cause it to lodge further in the trachea.

Food normally goes in your throat when you swallow. A coordinated swallow reflex, controlled partially by the tongue, helps you control the timing of swallowing.

the cartilage is important because it open trachea all the time.

shijuhew

This is part of breathing in, or inspiration. The trachea splits into the two bronchi (singular: bronchus) one of which goes to each lung.

NO. Windpipe is the Larynx and pharynx, and the esophagus is the tube to the stomach. The airway is closed off by a flap of skin, as you swallow, to prevent food or drink from getting into the "windpipe". If you have ever been strangled on something you swallowed, you know what happens when the latter is a little slow to cover the opening.

The ring of cricoid cartilage

pharynx

The epiglottis.

They are called the tracheal rings. There are 16-20 of them.

The trachea branches into the left and right airways at the carina. These branched airways are called the bronchi.

For a human who has smoked and destroyed the cilia by coating the inner wall of the trachea with tar, the mucus that is secreted will have no mechanism to bring it up the trachea to be swallowed except for the 'smoker's hack', a chronic cough that brings up the phlegm from the lungs. Those cilia do not regenerate so, the person will have the 'smoker's hack' for the rest of his life.

Yes. The gullet, also called as oesophagus lies posterior to trachea.

epiglottis

the chin

to take bad stuff away from the blood and replace it with oxygen

The epiglottis.

Trachea divides in 2 bronchi which conducte air into the lungs (inside the lungs each bronchi divides in many smaller branchs only studied in college)

No - the hairs inside the nose filter out dust - it's essentially what 'bogies' are made of !

According to a figure in my human biology book if the trachea and the Bronchus is made out of the same matter then the Trachea does enter the lung. Unless the bronchus is made out of unique tissue muscle etc.

The other name is the trachea. It is part of the respiratory system and helps to take air in and out of the lungs. The esophagus is a tube that leads to the stomach and is part of the digestive system.

The two tubes that carry air from the trachea to the lungs are called bronchial tubes
The bronchial tubes. As these tubes pass through the lungs, they divide into smaller passages called the bronchioles. The bronchioles end in air sacs called alveoli.

The trachea is structured in a way so that an individual can breathe at all times (in/voluntarily). The tracheal rings allow the trachea to stay open so that a person can breathe. The esophagus is flat b/c it is strictly for the passage of food, so it is not used as often as the trachea.