On the ventral side of an echinoderm (say, a sea star, for example) there are hundreds of tiny feet arranged into rows on each appendage. These are called tube feet. By varying the internal water pressure, the echinoderm can extend and contract its tube feet for locomotion, food collection, and respiration
What organ systems do echinodermes lacking
the organ that controls your breathing is the lungs =)
The organ responsible for breathing is your lungs.
Gills.............
The organ responsible for breathing is your lungs.
lungs
Starfish have suction-like cups helps to open clams
Just like humans, squirrels contain lungs, the major breathing organ in the respiratory system.
in humans there is the organ which does the breathing called the lungs
Organ
Lungs
Gills