Occupational Safety and Health Administration. 1  Department of Labor, Labor Department, DoL, Labor - the federal department responsible for promoting the working conditions of wage earners in the United States; created in 1913.
The oxygen and carbon dioxide exchange take place in the alveoli. Primary bronchi are located on the upper portion of the lungs, secondary bronchi is located at the center of the lungs and tertiary bronchi is located near bottom of the organs above the bronchioles.
Bronchospasm is a constriction or spasm of the bronchi. The bronchi refers to the two tubes that branch from the trachea to the lungs.Typically, bronchospasm occurs in people of any age, however, it can be especially ominous in infants.ronchospasm is a constriction or spasm of the bronchi. The bronchi refers to the two tubes that branch from the trachea to the lungs.