That lid is called as epiglottis.
Ans.........Cartilage or It is constructed of inflexible cartilage that always maintains it's shape.
You are thinking of the trachea, or windpipe, though it is not entirely made of cartilage.
The epiglottis prevents the food you eat from entering the trachea.
It is made up of rings of cartillage
it helps to prevent trachea from collapsing by maintaining definite shape
The C-shaped cartilage rings surrounding the trachea act as a support system, and allow the trachea to remain opened and prevent collapse with normal body movements.
Ans.........Cartilage or It is constructed of inflexible cartilage that always maintains it's shape.
You are thinking of the trachea, or windpipe, though it is not entirely made of cartilage.
the cartilage is important because it open trachea all the time.
cartilage rings give support to trachea to open all the time
What keeps the trachea open are small cartilage ring, called cricoid cartilage.
The trachea is a firm cartilaginous tube and is a self supporting structure
In the trachea there are rings of cartilage in a C shape
cricoid cartilageThyroid Cartilage
The walls of the trachea are made rigid by the presence of rings of cartilage. These rings extend from the larynx to the bronchial tubes.
The epiglottis protects the trachea from food.
The trachea is bolstered by cartilage tissue, which prevents it from collapsing.