Respiratory System Anatomy Quiz
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Questions and Answers

Where is the sense of smell located in the respiratory system?

  • Eustachian tubes
  • Nasal cavity (correct)
  • Oropharynx
  • Conchae

What structure separates the right and left nostrils in the nose?

  • Epiglottis
  • Septum (correct)
  • Cilia
  • Conchae

What do defensins do in the nasal cavity?

  • Warm incoming air
  • Connect to the ears
  • Fight infections (correct)
  • Regulate air volume in the lungs

Which part of the throat splits food into the esophagus and air into the trachea?

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

What is the main function of cilia in the larynx?

<p>Beat mucus and debris upward (D)</p> Signup and view all the answers

Which structure closes the trachea while swallowing food?

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

What is the main cause of alkaline pH in the blood during hyperventilation?

<p>Increased ventilation without the demand for more oxygen (B)</p> Signup and view all the answers

At higher altitudes, why does hemoglobin saturation drop to around 67% compared to about 98% at sea level?

<p>Lower partial pressure of oxygen in the air (A)</p> Signup and view all the answers

What is a key factor contributing to acute mountain sickness (AMS) at high altitudes?

<p>Low partial pressure of oxygen in the air (A)</p> Signup and view all the answers

Why is it important for acclimatization to occur slowly and over a period of time at high altitudes?

<p>To allow the body to adjust to lower levels of oxygen in the air (B)</p> Signup and view all the answers

What is a key role of the mother for a fetus regarding breathing and gas exchange?

<p>Providing oxygen and removing carbon dioxide for the fetus (C)</p> Signup and view all the answers

How does fetal breathing movement contribute to healthy development in a fetus?

<p>Exhaling fluid and inhaling air for muscle development (A)</p> Signup and view all the answers

Which center in the pons stimulates the dorsal respiratory group (DRG)?

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

What does hyperpnea refer to?

<p>Increase in rate and depth of ventilation (D)</p> Signup and view all the answers

Which gas has a very high pressure but low solubility in liquid?

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

What is the function of the peripheral chemoreceptors?

<p>Detect a decrease in oxygen (B)</p> Signup and view all the answers

What is the main way oxygen is transported in the blood?

<p>Bound to hemoglobin (D)</p> Signup and view all the answers

What causes bronchodilation in response to high pressure of carbon dioxide in the alveoli?

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

What is the primary form in which carbon dioxide travels in the blood?

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

What is Henry's Law related to?

<p>Effect of solubility and partial pressure of gas on dissolution in a liquid (C)</p> Signup and view all the answers

What triggers an increase in ventilation when oxygen levels decrease significantly?

<p>High O2 levels (A)</p> Signup and view all the answers

What happens to pulmonary arterioles with high levels of oxygen in the alveoli?

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

Which structure in the lungs is responsible for cleaning debris and killing pathogens?

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

What is the function of the visceral and parietal pleura surrounding the lungs?

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

What is the purpose of the transpulmonary pressure in the lungs?

<p>Keeps lungs inflated (A)</p> Signup and view all the answers

What influences ventilation in the lungs based on their size and air passage?

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

Which volume represents the air that never reaches the alveoli?

<p>Anatomical dead space (C)</p> Signup and view all the answers

What is the primary control center for respiratory rate in the body?

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

Which term refers to the number of breaths taken per minute?

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

What is the purpose of alveolar sacs in the respiratory zone of the lungs?

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

What is the term for the smallest area in the lungs where gas exchange occurs?

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

Which nerves are responsible for causing bronchoconstriction and bronchodilation?

<p>Sympathetic and parasympathetic nerves (A)</p> Signup and view all the answers

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