Which of the primary bronchi is most common site for lodging of a foreign object?
Bronchus (Greek for "windpipe") is singular. Bronchi is plural. The primary right and left bronchi direct the air into the right and left lungs. It then splits to go to each lobe of the lung. These tubes are secondary or lobar bronchi. The next division is the bronchiole tree, the alveolar duct and the alveolar sacs or clusters. Another less common name for the bronchi is "Respiratory Ducts".
The function of the left and right primary bronchi is to allow the passage of air to and from the lungs and trachea/windpipe. The only difference between the two bronchi is that the angle of the right bronchus at the carina (point of bifurcation) is straight while the left one is more angled. This is why in case someone aspirates something, it is almost always found lodged in the right bronchus instead of the left…
There are following types of keys in Database Management System . Primary key, Surrogate key, Foreign key, candidate key and alternate key. Primary key is one that identifies a record uniquely. Surrogate key is a system generated primary key . Foreign key is a key of other table that can be used to identify a row explicitly. Candidate key refers to combination of key to identify a row uniquely .