AQA Respiratory System

Identify which one of the following statements defines expiratory reserve volume.

• The amount of air breathed in or out per breath

• The amount of air left in the lungs after maximal expiration has occurred

• The amount of air that can be forcibly expelled after a normal breath

• The amount of air that can be forcibly inspired at the end of a breath

Which lung volume would be lower during exercise than at rest?

• Inspiratory reserve volume

• Minute ventilation

• Residual volume

• Tidal volume

Where does external respiration happen?

• Between the muscles and blood

• Between the lungs and blood

• Between the air and the lungs

• Between the blood and the lungs

Which of the following muscles does not contract during inspiration at rest?

• External Intercostal muscles

• Internal Intercostal muscles

• Diaphragm

Where in the brain is the Respiratory Control Centre Found?

• Cerebral Cortex

• Medulla Oblongata

• Pons

• Brain stem

Chemoreceptors detect levels of what?

• pH

• Oxygen

• Carbon Dioxide

• Lactic Acid

What does oxygen bind to in the blood?

• Neuroglobin

• Myoglobin

• Cytoglobin

• Haemoglobin

True or False. Haemoglobin has a higher affinity for carbon monoxide than it does oxygen

• FALSE

• TRUE