Multiple Choice
How should a nurse position a preschooler with right lower lobe pneumonia to optimize lung function?
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22. The Respiratory System
Introduction to Lung Physiology
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following muscles helps us breathe in?
A
Diaphragm
B
Trapezius
C
Rectus abdominis
D
Latissimus dorsi
Verified step by step guidance1
Identify the primary muscle responsible for the process of inhalation in the human body.
Understand that during inhalation, the thoracic cavity needs to expand to allow air to enter the lungs.
Recognize that the diaphragm is a dome-shaped muscle located at the base of the lungs and plays a crucial role in breathing.
Learn that when the diaphragm contracts, it flattens and moves downward, increasing the volume of the thoracic cavity and decreasing the pressure inside, which draws air into the lungs.
Differentiate the diaphragm from other muscles listed, such as the trapezius, rectus abdominis, and latissimus dorsi, which have different primary functions not directly related to the mechanics of breathing.
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