in the trachea
cartilage rings give support to trachea to open all the time
cartilage rings
No, cartilage is only contained up until the bronchi. The bronchioles and onward do not contain any cartilage rings, only smooth muscle.
The trachea is a firm cartilaginous tube and is a self supporting structure
The cartilage rings in the throat prevent the trachea from collapsing.
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.
Cartilaginous rings
yes
You are thinking of the trachea, or windpipe, though it is not entirely made of cartilage.
because trachea need support for open all the time and this support is cartilage rings
To hold something permanently open (such as the trachea, which is held open for breathing by rings of cartilage).
Trachea contain cartilage rings, and is the long tube that goes to the lungs. The bronchi contain cartilage plates and are the branching tubes that go to the lungs.