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It's the system that helps carry oxygen into our body's and we need oxygen in our body
respiration
To supply blood with oxygen so the blood can deliver the oxygen throughout the body.
so that the blood which carries oxygen can reach every part of our body.
Oxygen is carried through the blood to the lungs and the rest of your body so you can function.
Insects lack lungs so their basic respiratory system is tracheas. Tracheas of insects are aeriferous tubes which end on the sides of the body as small breathing holes called spiracles. Fine-branched parts of tracheae - tracheoles - permeate the entire body, covering organs and even penetrating inside some cells. In this way, oxygen is delivered to the cells of the body, and the gas exchange is ensured without use of the circulatory system.
The circulatory system distributes oxygen to body tissues as it works with the respiratory system. It also helps bring carbon dioxide back to the lungs so that it can be expelled.
The circulatory system and respiratory system are interlaced. The circulatory system much deliver nutrients to all the parts of the body. Every single part of the body needs oxygen, so the circulatory system takes the oxygen collected by the respiratory system and delivers it to the rest of the body.
The purpose of the Respiratory System is to bring oxygen into the blood so it can distribute it to the body. It also, turns oxygen into nutrients and removes carbon dioxide from the body.
Insects breathe though spiracles (holes) in their abdomen (butt). The air disperses through a network of tubes in the body called trachea, where the oxygen reaches the organs. So it's direct air flow, not carried by the blood like in us vertebrates. The 'blood' (haemolymph) of insects is involved in nutrient dispersal and immunity only.
the major function of the respiratory system is to get oxygen to the blood so it can carry it to every cell in the body.
The respiratory system provides oxygen so the body can "burn" (oxidize) the food that is brought into the body through the digestive system. The circulatory system brings nourishment to all cells of the body. The circulatory system exchanges critical gases with the respiratory system; unneeded carbon dioxide is exchanged for much needed oxygen.