Respiratory System 2

Tidal volume is ...

• The amount of oxygen used in one breath

• The greatest amount of air breathed in and out during exercise

• Amount of air inspired and expired with each normal breath at rest or during exercise

• The volume of blood ejected from the lungs each minute

Inspiration refers to breathing out.

• True

• False

Gaseous exchange is the transfer of what two gases in the lungs/muscles?

• Oxygen

• Nitrogen

• Water vapour

• carbon dioxide

The composition of inspired air is as follows:

• 78% oxygen, 21% carbon dioxide, 0.4% nitrogen

• 78% nitrogen, 21% carbon dioxide, 0.4% oxygen

• 78% nitrogen, 21% water vapour, 0.4% carbon dioxide

• 78% nitrogen, 21% oxygen, 0.4% carbon dioxide

Air enters the body and follows a specific pathway, select the correct pathway of air.

• Nasal cavity, trachea, bronchioles, bronchus, alveoli

• alveoli, bronchioles, bronchus, trachea, nasal cavity

• bronchus, bronchioles, trachea, alveoli, nasal cavity

• nasal cavity, trachea, bronchus, bronchioles, alveoli

Haemoglobin combines with oxygen to form ...

• Oxygen-haemoglobin

• Ox-haemoglobin

• Oxy-haemqoglobin

• Oxygenglobin

Select the functions of the body that enable the alveoli to be very efficient

• Filtered by hairs in the nose

• Lots of them

• Warmed by blood passing close to the nose

• Moistened by water vapour