The ends of each tracheal cartilage are connected by an elastic ligament and the
A)is lined by dense regular connective tissue.
B)is reinforced with C-shaped cartilages.
C)contains the vocal cords.
D)always maintains the same diameter.
E)ends distally at the level of the diaphragm.
Airways that supply one lobe of a lung are called
How many tertiary bronchi are typically present in each lung?