They have four: Gills, lungs, tongue, and skin.
lungs
it consists of two parts
Yes
the trachea
the lungs is the basic unit structure of the human respiratory system
the structers are a lot of thing yeah
Yes.
The nasal cavity
lungs, nose and mouth.
because
Gas exchange occurs in the alveoli in the respiratory system. The thin-walled structures allow diffusion of gases into and out of the capillaries.
its in the middle of your upper chest.. mostly including your lungs :)