Spot the intruder

Exercise and reference answers

Questions

1. Items

   1. Alveolus
   2. Bronchiole
   3. Trachea
   4. Cornea

   Odd item

   Cornea

2. Items

   1. Pleural membrane
   2. Diaphragm
   3. Rib muscles
   4. Tympanic membrane

   Odd item

   Tympanic membrane

3. Items

   1. Thin walls
   2. Moist lining
   3. Rich blood supply
   4. Thick cartilage

   Odd item

   Thick cartilage

Instructions

Three belong together. Tap the one that does not.