What are Spiracles?
Differentiate between Inhalation and Exhalation.
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- An external respiratory opening, especially each of a number of pores on the body of an insect, or each of a pair of vestigial gill slits behind the eye of a cartilaginous fish.
- inhalation.taking or breathing air into lungs exhalation. breathing air out of the lungs
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A spiracle or stigma is the opening in the exoskeletons of insects and some more derived spiders to allow air to enter the trachea. In the respiratory system of insects, the tracheal tubes primarily deliver oxygen directly into the animals' tissues.
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