Chapter 31, Problem 7WIO

Summary Introduction

To explain:

The cause of death when a person choke on hard candy or other small objects and in the event of drowning  where a person’s lungs are filled with water and also explain the body’s reaction in such situations to prevent either of these disasters from occurring.

Concept introduction:

Gases are exchanged with the environment at the respiratory surface. The bodies of different animals have been made so as to increase surface area to volume for efficient gaseous exchange to take place across their bodies.