Do insects have a heart and a liver or how do they breathe?

Question: Do insects have a heart and a liver or how do they breathe?
- Keywords:
  breathe,
  heart,
  insect,
  liver
Asked by KaiHilders442 to Kuntal on 12 Nov 2016.
- Kuntal Singh answered on 12 Nov 2016:
  
  Insects do not breathe the same way as we do. Their body has small openings called spiracles through oxygen is absorbed and than it is transported through a tube-like structure called tracheae to all parts of the body.

Question: Do insects have a heart and a liver or how do they breathe?