viruses are the smallest pathogens
roc is the smallest
the smallest is temperate rain forest
the smallest adult is dwarfs.
insects are the smallest animals
The trachea is the main trunk of the respiratory system. It is the central passageway from which the respiratory tree branches.
enables air to get to the lungs a passageway.
Terminal bronchitis
nasopharynx
the alveoli
the alveoli
nasal cavity
no
alveoli
bronchioles
Respiratory Portion.
No, the circulatory system is the system of blood passageways. Passageways that have to do with breathing are parts of the respiratory system.