MCQ
Which is correct sentence from given below?
- A$EC$ is sum of $ERV$ and $RV.$
- B$TV$ is sum of $ERV$ and $IC. $
- CGenerally $IRV$ is between $3000 -3500\, ml.$
- ✓$ERV$ is approximately in between $1000 -1100\, ml.$
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($i$) It consists of a network of trachea, that open through $12$ pairs of small holes called spiracles present on the lateral side of the body.
($ii$) Thin branching tubes carry oxygen from the air to all the parts.
($iii$) The opening of the spiracles is regulated by sphincters.
($iv$) Exchange of gases take place at the tracheoles by diffusion.