Ventilation and the thorax

Define the term tidal volume.

State what happens to the tidal volume of a 100 m swimmer during a race.

State the muscle group involved in rib cage movement during breathing.

The line graph below shows respiratory volume at rest.

State the tidal volume at rest.

Continue the line graph below to show how tidal volume changes when exercise starts.

The left bronchus enters the left lung.

The right bronchus enters the right lung.

Name two other features of the lungs and describe a function for each of the features you name.

A basketball match is about to start. Player A has performed a full warm up. Player B has not performed any warm up.

At the start of the match compare the short-term effects of a full warm up on the respiratory system of player A when compared to player B.

Fig. 2 shows a diagram of the lungs.

Draw on Fig. 2 to indicate the position of the diaphragm during inhalation.

Describe the role of the diaphragm during exhalation.

Describe the role of the intercostal muscles during expiration.