Respiratory System and Nasal Anatomy Quiz
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Questions and Answers

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

  • Decrease in oxygen demand
  • Increase in carbon dioxide retention
  • Increase in oxygen demand
  • Decrease in carbon dioxide retention (correct)

At what altitude would hemoglobin saturation be about 67%?

  • 19000 feet (correct)
  • Sea level
  • 28000 feet
  • 8000 feet

What is the main factor that poses a problem during exercise at higher altitudes?

  • Low oxygen reserve in the veins (correct)
  • Decreased heart rate
  • Dehydration from increased urination
  • Increased CO2 levels

What altitude usually triggers Acute Mountain Sickness (AMS)?

<p>8000 feet (D)</p> Signup and view all the answers

How is Acute Mountain Sickness (AMS) generally treated?

<p>Decreasing to a lower altitude (C)</p> Signup and view all the answers

When does fetal breathing movement usually begin?

<p>Week 20 of development (D)</p> Signup and view all the answers

What is the main function of the conchae in the nose?

<p>To clean and warm incoming air (B)</p> Signup and view all the answers

Where are the vocal cords and epiglottis located?

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

Which area in the respiratory system is responsible for splitting food into the esophagus and air into the trachea?

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

What happens to cilia in the larynx when exposed to cold air?

<p>They slow down (A)</p> Signup and view all the answers

What connects the ears to the nasal cavity in the nasopharynx area?

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

What is the role of the epiglottis during swallowing?

<p>Closing off the trachea (C)</p> Signup and view all the answers

What is the function of alveolar macrophages in the lungs?

<p>Clean debris and kill pathogens (C)</p> Signup and view all the answers

What is the purpose of the cardiac notch in the left lung?

<p>Create space for the heart (A)</p> Signup and view all the answers

Which type of muscle contraction is primarily responsible for deep breathing?

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

What is the total amount of air in the lungs represented by Total Lung Capacity (TLC)?

<p>$6000$ ml (B)</p> Signup and view all the answers

What does the anatomical dead space refer to?

<p>Air that never reaches the alveoli (C)</p> Signup and view all the answers

Which pressure is responsible for inspiration during breathing?

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

What controls the respiratory rate in humans?

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

Which structure carries deoxygenated blood to the lungs?

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

$500$ ml of air entering the lungs during quiet breathing is known as what?

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

What is the primary role of terminal bronchioles in the respiratory system?

<p>Branch out into bronchioles (A)</p> Signup and view all the answers

What is the function of the apneustic center located in the pons?

<p>Stimulates the dorsal respiratory group (DRG) (C)</p> Signup and view all the answers

How does the body's respiratory rate adjust in response to a decrease in oxygen levels?

<p>It increases ventilation (A)</p> Signup and view all the answers

What happens when there is a high pressure of oxygen in the alveoli?

<p>Pulmonary arterioles dilate (A)</p> Signup and view all the answers

Which gas law states that the sum of each gas pressure is the total pressure?

<p>Dalton's Law (B)</p> Signup and view all the answers

What is the primary form through which carbon dioxide is transported in the blood back to the lungs?

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

How does a decrease in pH influence oxygen saturation of hemoglobin?

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

What is hyperpnea?

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

What happens to oxygen after it diffuses into a red blood cell?

<p>Binds with the iron molecule connected to hemoglobin. (B)</p> Signup and view all the answers

Which molecules are responsible for transporting most of the carbon dioxide back to the lungs?

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

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