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IMSO 2021 Science International - Theory I Question 9

IMSO Science · IMSO 2021 Science International - Theory I

Question 9

(9) The diagram below shows the structures present between the mouth and the oesophagus.

Which of the following options CORRECTLY describes how Structures P and Q work together to prevent choking during the process of swallowing? [1 mark]

| Option | Structure P | Structure Q |
| --- | --- | --- |
| A | Moves up | Moves up |
| B | Moves down | Moves down |
| C | Moves up | Moves down |
| D | Moves down | Moves up |

Question illustration
  1. P up; Q up
  2. P down; Q down
  3. P up; Q down
  4. P down; Q up