Font size
WorksheetsYear 4 Ventilation Practice 1
Total questions: 13
Worksheet time: 6mins
Which term describes the pumping of air to the respiratory surface to replace the air that is already present.
gas exchange
digestion
ventilation
circulation
Which of the following is NOT a processe of ALL living organisms?
ventilation
growth
metabolism
respiration
The thorax is made up of
nasal passage, pharynx & larynx
trachea, bronchi & bronchioles
rib cage, lungs & trachea
rib cage, intercostal muscles & diaphragm
Which of the following is true for inhalation?
internal intercostal muscles contract
external intercostal muscles contract
rib cage moves downwards and inwards
rib cage move downwards and outwards
Which of the following is true for exhalation?
rib cage moves up and out
rib cage moves down and out
Diaphragm relax and domes upwards
Diaphragm relax and flattens
What are the main muscles of inhalation?
The diaphragm and intercostal muscles
The diaphragm and the abdominal muscles
The smooth muscles and abdominal muscles
The diaphragm and heart muscles
What happens when the external intercostals contract during inhalation?
The diaphragm relaxes
The ribs move out and up
Pressure in the lungs increases
The size of the thoracic cavity decreases
A contraction of the diaphragm during inhalation causes it to flatten. What else does the contraction result in?
An increase in the volume of the thoracic cavity
Increase in alveolar pressure
A decrease in lung volume
A decrease in the volume of the thoracic cavity
When air pressure inside the lungs is lower than air pressure in the atmosphere...
Air moves into the lungs
Air moves out of the lungs
Which of the following is a correct adaptation of alveoli for gas exchange?
high surface area
moist inner surface to dissolve O2 and CO2
dense network of blood capillaries surrounding each alveolus
All of the above
Ventilation maintains a high concentration of oxygen in the alveoli.
Which one of the following maintains a low concentration of oxygen in blood capillaries that are close by?
respiration
perspiration
circulation
evaporation
The alveoli receive blood from
the pulmonary artery
the pulmonary vein
the aorta
the hepatic portal vein
