how does an insect take in air and how does the air reach the different parts of its body
Answers
Answer:
Insects do not have lungs, nor do they transport oxygen through their circulatory systems. ... Oxygen travels to insect tissues through tiny openings in the body walls called spiracles, and then through tiny blind-ended, air-filled tubes called tracheae. ...
Explanation:
Insects take in Oxygen and expel Carbon Dioxide using a series of internal air tubes, the tracheae. These pass fine branches, the tracheoles, to all parts of the body. The cuticle lines the tracheae. These linings are shed with the rest of the cuticle when the insect moults. There is a main pair of lateral tracheae running the length of the body, one on each side. Some insects show two such pairs, one dorsal, the other ventral.
From the main trunks, tracheoles pass throughout the body. The tracheae open to the air at the paired spiracles. There is one pair per segment in the thorax and also in the first nine abdominal segments. This arrangement does vary with different species. In most species the spiracles on the first segment of the thorax are missing. The pair on the ninth abdominal segment is also missing.