Respiration/Circulation Graphs Station

Question 1

P wave (electrocardiogram)

Answer 1

• SA node sends impulse and the atria contract
• Creates “P” on graph

Question 2

QRS wave (electrocardiogram)

Answer 2

• AV node sends impulse and the ventricles contract
• Creates QRS wave

Question 3

T waves (electrocardiogram)

Answer 3

• The relaxing of the ventricles
• Creates little “T” bump

Question 4

Tidal Volume (Spirograph)

Answer 4

The volume of air that moves in and out of the lungs in a normal breath

Question 5

Inspiratory Reserve Volume (Spirograph)

Answer 5

The maximal volume that can be inhaled forcefully

Question 6

Expiratory Reserve Volume (Spirograph)

Answer 6

The maximal volume of air that can be exhaled forcefully

Question 7

Residual Volume (Spirograph)

Answer 7

The volume of air remaining in the lungs after a maximal exhalation

Question 8

Total Lung Capacity (Spirograph)

Answer 8

• The volume of air in the lungs at maximal inflation
• Is estimated since the true residual volume cannot be measured directly