In the following figure of respiratory system organs labelled by 1 and 2 are respectively:
  • Tracheae, Lungs
  • Lungs, Tracheae
  • Nasal cavity, Lungs
  • Lungs, Nasal cavity
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0