Tracheal cartilage which is complete, Bronchial tree

Question

Accepted Answer

Thay tha 16 to 20 in number 
Made up of hylin cartilage
Thay ara complete cartilage on ventral  side and incomplete cartilage on dorsal sind on dorsal side they are muscular membrane is present .
Trachea devide into 2 primary bronchi at 5th thoracic vertebrae 
Is side trachea mucus is present which provides moisture and also help to trap bacteria and other microbes.in between two tracheal ring flip like membrane is present they joint together by this membrane

Accepted Answer

The dorsally incomplete cartilagenous rings found in the trachea are made up of "Hyaline Cartilage".