Question

What are th main structures of the respiratory system

Answer 1

nose.
mouth.
pharynx.
larynx.
trachea
bronchi.
bronchioles .
alveoli and lungs....this is the main structures or pathway of air

Answer 2

The process of respiration is divided into two types:
i)external:external consist of:
a)nostrils
b)nose
c)nassal passage
d)pharynx
e)larynx
f)trachea(wind pipe)
g)bronchus
h)bronchioles
i)alveolar duct
j)Alveoli
k)lungs

ii)internal: Internal consist of:
a)blood
b)arteries(contain oxygenated blood)
c)blood capillaries
d)cell
e)veins(contain dioxygenated blood)..........hope this helps u...