Sheet 4 Physiology

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the volume that normal people like us can reach in their lungs?

  • Minimal volume
  • Resting volume
  • Maximum volume
  • Residual volume (correct)

Is it possible for normal people to reach minimal volume in their lungs?

  • No, they can't reach minimal volume (correct)
  • People with lung diseases can reach minimal volume
  • Only athletes can reach minimal volume
  • Yes, they can reach minimal volume

Which volume of the lungs indicates that normal people like us cannot reach minimal volume?

  • Minimal volume
  • Maximum volume
  • Residual volume (correct)
  • Resting volume

If someone can reach the resting volume of their lungs, are they considered normal in this context?

<p>No, they are not normal (B)</p> Signup and view all the answers

Which lung volume can normal individuals not achieve as stated in the text?

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

What does the slope represent in the context provided?

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

What is the resting volume of the lung referred to as?

<p>Minimal Volume (MV) (A)</p> Signup and view all the answers

Why does the lung lose its tendency to collapse at resting volume?

<p>Due to being at its resting state (A)</p> Signup and view all the answers

In the formula Slope= ΔV/ ΔP, what does ΔV represent?

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

What is another term used for the resting volume of the lung?

<p>Stressed Volume (SV) (D)</p> Signup and view all the answers

In the context provided, which stage involves inflating a partially inflated lung with little force?

<p>Stage 2 (A)</p> Signup and view all the answers

What is not recommended in the context of the uncompliant lung?

<p>Inflate a totally inflated lung (D)</p> Signup and view all the answers

Why do we refer to the backward process as hysteresis in the context provided?

<p>Because it has a different curve than the forward process (B)</p> Signup and view all the answers

Which component has an approximate compliance of 200ml/1cmH2O?

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

What are the two components that make up the respiratory system analogy provided in the text?

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

What percentage of the dynamic work is required to overcome the viscosity of the lung and chest wall structures?

<p>20% (B)</p> Signup and view all the answers

Which type of forces need to be overcome to perform the work mentioned in the text?

<p>Non-elastic forces (A)</p> Signup and view all the answers

What aspect of the lung and chest wall structures contributes to the dynamic work that needs to be overcome?

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

If the dynamic work is 100 units, how many units are needed to overcome the viscosity of the lung and chest wall structures?

<p>20 units (C)</p> Signup and view all the answers

What happens to the remaining 80% of dynamic work after accounting for the viscosity of the lung and chest wall structures?

<p>It is used to overcome elasticity (A)</p> Signup and view all the answers

At functional residual capacity in a normal male adult, what happens to the arterial oxygen partial pressure (PaO2)?

<p>It remains the same (B)</p> Signup and view all the answers

At functional residual capacity in a normal male adult, what happens to the arterial carbon dioxide partial pressure (PaCO2)?

<p>It remains the same (D)</p> Signup and view all the answers

What happens to lung compliance at functional residual capacity in a normal male adult?

<p>It remains the same (C)</p> Signup and view all the answers

Which of the following is true regarding lung volumes at functional residual capacity?

<p>Expiratory reserve volume is fully utilized (B)</p> Signup and view all the answers

What happens to alveolar pressure compared to atmospheric pressure at functional residual capacity in a normal male adult?

<p>Alveolar pressure is equal to atmospheric pressure (B)</p> Signup and view all the answers

At functional residual capacity in a normal male adult, what happens to lung recoil pressure?

<p>It remains constant (C)</p> Signup and view all the answers

What role does surfactant play at functional residual capacity in the respiratory system analogy provided?

<p>Maintains alveolar inflation (B)</p> Signup and view all the answers

Why is it important for the lung to have a tendency to collapse at minimal volume?

<p>To maintain proper gas exchange efficiency (B)</p> Signup and view all the answers

How does lung compliance change from minimal volume to functional residual capacity in a normal male adult?

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

Which component contributes most significantly to the dynamic work needed to overcome the viscosity of lung and chest wall structures?

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

What is true about the lung compliance at functional residual capacity in a normal male adult?

<p>It decreases compared to other lung volumes (D)</p> Signup and view all the answers

Which force needs to be overcome in the context provided to perform the work mentioned?

<p>Viscous forces in the lung and chest wall structures (D)</p> Signup and view all the answers

What role does surfactant play at functional residual capacity?

<p>Prevents alveolar collapse during exhalation (A)</p> Signup and view all the answers

What happens to alveolar pressure compared to atmospheric pressure at functional residual capacity in a normal male adult?

<p>Alveolar pressure is higher than atmospheric pressure (C)</p> Signup and view all the answers

What happens to the arterial oxygen partial pressure (PaO2) at functional residual capacity in a normal male adult?

<p>It decreases compared to other lung volumes (B)</p> Signup and view all the answers

What is true about the backward process referred to as hysteresis in the context provided?

<p>It occurs due to changes in alveolar volume during inhalation and exhalation (D)</p> Signup and view all the answers

What volume of the lungs indicates that normal individuals cannot reach minimal volume?

<p>Total lung capacity (B)</p> Signup and view all the answers

Why is it important for the lung to have a tendency to collapse at minimal volume?

<p>To facilitate efficient gas exchange (C)</p> Signup and view all the answers

What happens to the remaining 80% of dynamic work after accounting for the viscosity of lung and chest wall structures?

<p>It is utilized for overcoming elastic forces in the lung tissue (B)</p> Signup and view all the answers

What aspect of the lung and chest wall structures contributes significantly to the dynamic work needed to be overcome?

<p>Elasticity of lung tissue (A)</p> Signup and view all the answers

Flashcards are hidden until you start studying

Related Documents

Respiratory Physiology II PDF

More Like This

Use Quizgecko on...
Browser
Browser