L1 Functions of Respiratory System and Respiratory Cycle
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Questions and Answers

What is the primary function of the respiratory system related to voice production?

  • Controls the sense of smell
  • Regulates blood pressure
  • Filters foreign particles from the air
  • Produces sound through vocal cord vibration (correct)

Where are the taste receptors located in the respiratory system?

  • In the olfactory membrane
  • In the trachea
  • In the nasal cavity
  • In the pharynx (correct)

Which substance is secreted by the respiratory system along with surfactant and prostaglandins?

  • Angiotensin converting enzyme (ACE) (correct)
  • Cortisol
  • Adrenaline
  • Histamine

How are particles larger than 10 µ removed from the air in the respiratory system?

<p>Through sneezing reflex (B)</p> Signup and view all the answers

Which mechanism prevents foreign particles from reaching the alveoli in the respiratory system?

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

What role do the conchae (nasal turbinate) play in the respiratory system?

<p>Directing air movement (A)</p> Signup and view all the answers

Which component of bronchial secretion helps in defense within the respiratory system?

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

'Turbulent precipitation' in nasal passageways aids in entrapping particles suspended in the air. How are these particles eventually removed by the respiratory system?

<ul> <li>By ciliary action to transport them to be swallowed (B)</li> </ul> Signup and view all the answers

What is the function of angiotensin-converting enzyme (ACE) inhibitors mentioned in the text?

<p>Relax veins and arteries to lower blood pressure (D)</p> Signup and view all the answers

Which part of the lower respiratory tract is responsible for gas exchange in the lungs?

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

How many times is the lower respiratory tract divided to form the conducting zone?

<p>16 times (C)</p> Signup and view all the answers

What is the functional unit of the lung according to the provided text?

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

Which muscle is primarily responsible for the process of inspiration during breathing?

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

What is the main function of the respiratory system related to blood?

<p>CO2 excretion regulation (C)</p> Signup and view all the answers

Which part of the lower respiratory tract acts as a passageway for air to reach the alveoli?

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

In which generation does the trachea fall in the lower respiratory tract division mentioned?

<p>0th generation (D)</p> Signup and view all the answers

What percentage of heat loss at rest is regulated by the respiratory system?

<p>*4% (B)</p> Signup and view all the answers

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