What is vital capacity

• Inspiratory reserve volume plus total lung capacity

• Total lung capacity minus residual volume

• Tidal volume plus inspiratory reserve volume

• Residual volume minus expiratory reserve volume

What are the principal structures of the ventilatory systems

• Mouth, trachea, ribs, intercostal muscles

• Nose, pharynx, aorta, diaphragm

• Nose, trachea, bronchioles, alveoli

• Mouth, larynx, diaphragm, lungs

What are the functions of the nose during inspiration (can select more than one)

• To moisten the air

• To diffuse oxygen from the air

• To filter the air

• To stop us breathing through our mouth

What is the of tidal volume?

• volume of air in the lungs after maximum inhalation

• maximum volume of air that can be exhaled after a maximum inhalation

• volume of air breathed in and out in a normal breath

• additional inspired air over and above the tidal volume

• volume of air still contained in the lungs after a maximal exhalation

What is residual volume

• volume of air in the lungs after maximum inhalation

• maximum volume of air that can be exhaled after a maximum inhalation

• volume of air breathed in and out in a normal breath

• additional inspired air over and above the tidal volume

• volume of air still contained in the lungs after a maximal exhalation

Which is a principal structure of the ventilatory system

• pulmonary artery

• trachea

• pulmonary valve

• capillary

What is inspiratory reserve volume

• volume of air in the lungs after maximum inhalation

• maximum volume of air that can be exhaled after a maximum inhalation

• volume of air breathed in and out in a normal breath

• additional inspired air over and above the tidal volume

• volume of air still contained in the lungs after a maximal exhalation

What is pulmonary ventilation

• Exchange of respiratory gases between the lungs and blood

• Diffusion of oxygen in the alveoli

• Volume of air breathed in and out in one breath

• Inflow and outflow of air between the atmosphere and the lungs

Which structure is responsible for moistening the air entering the ventilatory system

• Bronchi

• Larynx

• Pharynx

• Nose

What is the action of the diaphragm (D) and the external intercostal muscles (EIM) during exhalation?

• D & EIM - relaxes

• D & EIM - contract

• D - relaxes EIM - contracts

• D - contracts EIM - relaxes