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Flashcards in Gas exchange Deck (6)
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1

What is the difference between inhalation and exhalation?

Inhalation is when oxygen diffuses across the lungs and exhalation is when the diaphragm relaxes and decreases the volume of the lungs.

2

What structure makes the windpipe stay open?

The cartilage

3

What body movements force air from the lungs?

Diaphragm relaxes and moves, intercostal muscles relax and move in.

4

How does the diaphragm help you breath in.

It flattens and contracts
Volume decreases
pressure increases.

5

Describe and explain what happens when the rubber sheet is pulled down

Balloon would inflate
Pulling rubber sheet down increases volume of jar.
Air rushes into the balloon

6

Diffusion definition

Movement of molecules
High concentration to low concentration.