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Respiratory System Anatomy and Physiology

7 Questions

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Respiratory System Anatomy and Physiology

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Questions and Answers

What is the primary effect of diaphragm contraction on thoracic cavity dimensions?

No change in thoracic cavity dimensions

Increase in vertical dimension (correct)

Decrease in vertical dimension

Decrease in anteroposterior dimension

What is the main function of the intercostal muscles in respiration?

Elevating and outwardly moving the ribcage (correct)

Deflating the lungs

Inflating the lungs

Contracting the diaphragm

What happens to the thoracic cavity volume during inhalation?

It is uncertain

It remains the same

It increases (correct)

It decreases

What is the result of the descent of the diaphragm during inhalation?

More space for the lungs to expand Signup and view all the answers

What is the primary effect of chest contraction on thoracic cavity dimensions?

Increase in anteroposterior and lateral dimensions Signup and view all the answers

What is the outcome of the increased thoracic cavity dimensions during inhalation?

More air enters the lungs Signup and view all the answers

What is the overall effect of diaphragm and chest contraction on lung volume?

Increase in lung volume Signup and view all the answers