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Spontaneous Breathing and Ventilation Quiz

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Spontaneous Breathing and Ventilation Quiz

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Questions and Answers

What causes the decrease in alveolar pressure during spontaneous ventilation?

Increase in chest volume (correct)

Contraction of accessory chest wall muscles

Decrease in chest volume

Pressure change in the abdominal cavity

Why does air flow into the lungs during spontaneous ventilation?

Ohm's law

Increase in pleural pressure

Decrease in alveolar pressure (correct)

Contraction of lung tissues

What happens to pleural pressure during exhalation?

Increases

Becomes equal to atmospheric pressure

Decreases (correct)

Remains constant

How does gas flow according to Ohm's law during spontaneous ventilation?

From areas of higher pressure to lower pressure Signup and view all the answers

What results in the flow of air out of the lungs during exhalation?

Pressure inside the lungs becoming greater than outside Signup and view all the answers

Why do the diaphragm and chest wall muscles relax during exhalation?

To decrease chest wall volume Signup and view all the answers

What is the role of intrathoracic pressure during spontaneous ventilation?

It helps increase alveolar pressure Signup and view all the answers

Which process describes gas exchange at the alveolar level?

Diffusion Signup and view all the answers

Where does oxygen and carbon dioxide exchange occur in the respiratory system?

Alveoli Signup and view all the answers

What happens to oxygen during inhalation in the pulmonary capillaries?

It diffuses out Signup and view all the answers

During exhalation, what type of air is primarily exhaled?

Air high in carbon dioxide Signup and view all the answers

How do gases like oxygen and carbon dioxide move during respiration?

By diffusion Signup and view all the answers

What allows for the delivery of oxygenated blood to the body during respiration?

Passive diffusion in the alveoli Signup and view all the answers

Where does the process of respiration occur in the lungs?