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WorksheetsGCSF2013 RESPIRATORY SYSTEM QUIZ 1
Total questions: 20
Worksheet time: 40mins
What is the largest cartilage in the larynx that forms the Adam's apple?
Epiglottis
Cricoid cartilage
Thyroid cartilage
Arytenoid cartilage
Which of the following is not a function of the pseudostratified ciliated columnar epithelium of the nasal cavity?
Warms the air
Moisturizes the air
Traps dirt and debris from inhaled air
Exchanges oxygen and carbon dioxide
The lungs have
one blood flow route and one lymphatic supply.
two blood flow routes and one lymphatic supply.
one blood flow route and two lymphatic supplies.
two blood flow routes and two lymphatic supplies.
During inspiration, the diaphragm _______ and the volume of the thoracic cavity _________, whereas during expiration, the diaphragm _________ and the volume of the thoracic cavity ___________.
relaxes; increases; contracts; decreases
contracts; increases; relaxes; decreases
relaxes; decreases; contracts; increases
contracts; decreases; relaxes; increases
Surfactant facilitates alveolar ventilation by
decreasing thoracic compliance.
attracting water to the alveolar surface.
increasing the surface area for gas exchange.
decreasing the surface tension between water molecules on the lining of the alveoli.
Calculate the alveolar ventilation if the tidal volume is 500 ml., the respiratory rate is 12/minute, and the anatomical dead space is 100 ml.
1200 ml
1800 ml
4800 ml
6000 ml
If the total pressure of a mixture of gases was 760 mm Hg and its composition is 20% oxygen, 0.04% carbon dioxide, 75% nitrogen, and 5% water vapor, then the partial pressure of oxygen would be
20 mm Hg.
148 mm Hg.
152 mm Hg.
740 mm Hg.
Which of the following does not influence the rate of gas diffusion across the respiratory membrane?
Temperature of the gases
Diffusion coefficients of the gases
Thickness of the respiratory membrane
Partial pressure gradients of the gases
In which of the following sequences does PO2 progressively decrease?
Systemic tissues, arterial blood, alveolar air
Systemic tissues, alveolar air, arterial blood
Blood in aorta, atmospheric air, systemic tissues
Atmospheric air, blood in aorta, systemic tissues
Which of the following is the respiratory center responsible for inspiration?
Dorsal respiratory groups
Ventral respiratory groups
Pontine respiratory groups
Both the dorsal and ventral respiratory groups
Oxygen and carbon dioxide are exchanged across the respiratory membrane by the process of __________.
osmosis
filtration
diffusion
active transport
The volume of air available for gas exchange per minute is called the __________.
vital capacity
alveolar ventilation
minute respiratory volume
functional residual capacity
During expiration, the alveolar pressure must be
greater than pleural pressure.
equal to atmospheric pressure.
less than atmospheric pressure.
greater than atmospheric pressure.
For air to flow into or out of the lungs, there must be
a diffusion gradient between the atmosphere and the alveoli.
a temperature gradient between the atmosphere and the alveoli.
a volume gradient established between the atmosphere and the alveoli.
a pressure gradient established between the atmosphere and the alveoli.
Expiration during quiet breathing
is an active process.
requires more muscle contractions than inspiration.
is due to contraction of the diaphragm and elevation of the ribs.
occurs when the diaphragm and external intercostal muscles relax.
hich of the following statements concerning the lungs and the pleura is true?
The pleural fluid assists in gas exchange.
Parietal pleura covers the surface of each lung.
Each lung is suspended in a separate pleural cavity.
The space between the visceral and parietal pleurae is called the mediastinum.
Which of the following muscles increases the volume of the thorax during a normal inhalation?
(1) diaphragm
(2) external intercostals
(3) internal intercostals
(4) rectus abdominis
1, 2
1, 3
2, 3
2, 4
Oxygenated blood is carried to the tissues of the lungs via the __________.
abdominal aorta
bronchial arteries
pulmonary artery
pulmonary arteries
What type of cells make up about 90% of the alveolar surface?
Macrophages
Type I pneumocytes
Type II pneumocytes
Ciliated columnar epithelial cells
Which of the following functions is associated with the nose?
Cooling inhaled air
External respiration
Initiating the cough reflex
Producing mucus to trap debris from inhaled air
