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WorksheetsRespiratory System
Total questions: 15
Worksheet time: 10mins
When the diaphragm contracts:
the volume of the thoracic cavity increases and the pressure decreases, causing air to rush into the lungs.
the volume of the thoracic cavity decreases and the pressure increases causing air to rush out of the lungs.
Which of the following is the correct order in which air would flow during inspiration?
alveoli, bronchi, bronchioles
bronchi, alveoli, bronchioles
bronchi, brochioles, alveoli
bronchioles, bronchi, alveoli
The exchange of air between the atmosphere and alveoli is:
internal respiration
pulmonary ventilation
external respiration
pulmonary perfusion
Tidal volume is the:
volume of air remaining in the lungs after a maximal expiratory effort
maximum volume of air that can be expired after a maximal inspiratory effort
total volume of exchangeable air in the lungs
volume of air inhaled or exhaled during quiet breathing
The process of gas exchange with the blood occurs in the:
bronchi
bronchioles
alveoli
ventricles
The movement of oxygen from the alveoli to the blood and from the blood to the tissues occurs via the process of:
osmosis
diffusion
phagocytosis
cytokinesis
The bronchial circulation of the lungs:
supplies oxygenated blood to all lung tissue except alveoli
delivers deoxygenated blood to the pulmonary capillaries surrounding the alveoli
conveys the freshly oxygenated blood from the lungs to the heart
Surfactant:
decreases the surface tension of fluid in the alveoli
increases the energy required to keep the lungs inflated
makes the lungs tend to collapse
traps foreign particles that enter the lungs
In obstructive pulmonary diseases there is a decrease in airflow due to an increase in:
(a)
Type II alveolar cells:
allow equalisation of air pressure between alveoli
produce surfactant that prevents alveoli from collapsing during exhalation
are the main cell of the alveolar wall
roam the inner surface of the alveoli to digest any stray debris or microorganisms
70% of the carbon dioxide in the blood is transported in the form of:
(a)
The ability of the lungs and thoracic cavity to stretch is:
(a)
Changes in the concentrations of oxygen and carbon dioxide in the blood are detected by:
(a)
Low arterial PCO2 will trigger:
hyperventilation
hypoventilation
hypercapnia
respiratory acidosis
Lung stretch, emotions and choice can all influence the respiratory centres in the medulla.
True
False
