Internal Respiration and Lung Anatomy Quiz
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Questions and Answers

Where does internal respiration occur?

  • Tissue at the cellular level (correct)
  • Lung borders
  • Systemic capillaries
  • Anatomical structures

Which part of the body is responsible for the physiological exchange of gases within the cell?

  • Musculoskeletal system
  • Pons
  • Medulla Oblongata
  • Cellular physiological process (correct)

Where does the apex of the lung rest in the chest area?

  • 6th rib
  • 3-4 cm above the clavicles (correct)
  • MCL
  • On the diaphragm

Which part of the brain is responsible for being the inspiratory center?

<p>Medulla Oblongata (D)</p> Signup and view all the answers

Which nerve innervates the diaphragm, a muscle essential for breathing?

<p>Phrenic nerve (D)</p> Signup and view all the answers

Which muscle is NOT considered an accessory muscle for breathing?

<p>Biceps brachii (A)</p> Signup and view all the answers

What is the primary function of the respiratory system?

<p>Exchanging oxygen and carbon dioxide through respiration (C)</p> Signup and view all the answers

Which muscle is primarily responsible for respiration?

<p>Diaphragm (C)</p> Signup and view all the answers

On which level does the physiological process of respiration occur?

<p>External, internal, and cellular (A)</p> Signup and view all the answers

Which structures are contained in the mediastinum?

<p>Heart and esophagus (B)</p> Signup and view all the answers

What is the function of the phrenic nerve in respiration?

<p>Innervates the diaphragm for breathing (B)</p> Signup and view all the answers

Where does external respiration occur in the respiratory system?

<p>Between alveoli and blood through alveolar-capillary membrane (A)</p> Signup and view all the answers

Which primary muscle is responsible for inspiration during normal breathing?

<p>Diaphragm (B)</p> Signup and view all the answers

What is the main stimulus for breathing under normal circumstances?

<p>Rise in carbon dioxide levels (A)</p> Signup and view all the answers

Which part of the respiratory system usually experiences fibrosis with age?

<p>Alveoli (D)</p> Signup and view all the answers

During pregnancy, what respiratory change occurs as the diaphragm rises?

<p>Increased inspiratory volume (D)</p> Signup and view all the answers

Which condition results in a less effective increase in respiration compared to hypercapnia?

<p>Hypoxemia (D)</p> Signup and view all the answers

What happens to the chest cavity during expiration?

<p>Decreases in size (A)</p> Signup and view all the answers

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