Because if it collapses you will not be able to breathe....and will die.
Because it stops the blood flowing out
Cartilage is necessary in the wall of the trachea because it supports the trachea and keeps it open at all times. New born babies do not have these rings of cartilage around their trachea, which is why their heads need to always be supported carefully.
Supporting catilaginous rings keep it open.
The tube is known as the trachea, or windpipe. It serves as a passageway for air to travel in and out of the lungs. The rings of cartilage help keep the trachea open, while the cilia and mucous membrane function to trap and remove any foreign particles or debris from the air before it reaches the lungs.
The C-shaped cartilages in the trachea are specifically designed to provide structural support and prevent collapse of the trachea during breathing. They do not serve a purpose in the expansion of the trachea or esophagus.
The trachea is a firm cartilaginous tube and is a self supporting structure
The trachea needs to remain open to allow airflow to the lungs even when an animal is asleep. Keeping the trachea open ensures that oxygen can continue to reach the lungs and carbon dioxide can be released, even during periods of reduced muscle tone that occur during sleep. If the trachea were to close completely, it would obstruct the airflow and prevent the animal from breathing properly.
the trachea is held open by rings of cartilages
16-20 rings!
trachea has cartilage rings which it open all the time
The trachea is made of C shaped rings of cartilage, this maintains the shape of the trachea.
The c-ring cartilege in the trachea keep the airway open and help protect it from damage. Since the membrane is so fragile, the rings keep it from collapsing in on itself (we would suffocate) and protect it from damage externally (an external blow to the neck).