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Respiratory System and Breathing Cycles Quiz

18 Questions

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Respiratory System and Breathing Cycles Quiz

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Questions and Answers

What is the function of the pleural cavity?

To produce mucus for lung protection

To support the blood vessels supplying the lungs

To prevent friction between the lung layers during breathing (correct)

To store air for breathing

Which lung has more lobes and segments?

Right lung (correct)

Left lung

Both lungs have an equal number of lobes

Neither lung has lobes

What is the shape of the base of the lung?

Triangular

Rounded

Convex

Concave & semilunar (correct)

Which lung does not have a middle lobe?

Left lung Signup and view all the answers

Which fissure separates the upper and lower lobes in the right lung?

Oblique fissure Signup and view all the answers

What does the mediastinal surface of the left lung have?

Large cardiac impression Signup and view all the answers

What is the average respiratory rate per minute?

14 breaths Signup and view all the answers

During expiration, what happens to the capacity of the thoracic cavity?

It decreases Signup and view all the answers

What is the function of the diaphragm during inspiration?

It contracts and moves downward Signup and view all the answers

Which muscle contracts to enlarge the thoracic cavity during breathing cycles?

Diaphragm Signup and view all the answers

What is the approximate volume of tidal volume (TV) during each breathing cycle?

500 ml Signup and view all the answers

In gas exchange, where does oxygen primarily pass through to reach the blood?

Alveoli walls and capillaries Signup and view all the answers

Where does the exchange of gases in the lungs primarily take place?

Alveoli Signup and view all the answers

What type of cells line the distal bronchioles?

Non-ciliated cuboidal-shaped cells Signup and view all the answers

Which nerve is primarily responsible for the nerve supply related to external respiration?

Vagus nerve Signup and view all the answers

What is the function of the pleura in relation to the lungs?

To create a closed sac that contains serous fluid around each lung Signup and view all the answers

Which of the following is true about the visceral pleura?

Adheres to the lung, covering each lobe & passing into the fissures Signup and view all the answers

What is the main function of conducting airways in the respiratory system?

Bring air into the lungs Signup and view all the answers