The Lower Respiratory Tract Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

Which structure is responsible for the primary gas exchange in the respiratory tract?

  • Capillaries
  • Bronchi
  • Cartilaginous rings
  • Alveoli (correct)

What is the approximate number of alveoli in our lungs?

  • 100 million
  • 300 million (correct)
  • 200 million
  • 400 million

What is the function of the bronchi?

  • Gas exchange
  • Distributing air to the lungs (correct)
  • Cleansing air
  • Warming air

What is the function of the alveoli?

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

What is the role of surfactant in the alveoli?

<p>Reducing surface tension (B)</p> Signup and view all the answers

Which structure forms the wall of the alveoli?

<p>A single layer of cells (D)</p> Signup and view all the answers

What is the barrier through which gases exchange between the alveolar air and blood capillaries called?

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

What helps keep the alveoli open?

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

What is the function of mucus in the respiratory tract?

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

What is the role of capillaries in the lungs?

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

Which structure holds up the main structure of the trachea?

<p>C-shaped cartilage rings (D)</p> Signup and view all the answers

What is the function of the trachea?

<p>To direct air into the lungs (B)</p> Signup and view all the answers

What is the name of the tube that extends from the larynx to the primary bronchi?

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

What is the diameter of the trachea?

<p>2.5cm (C)</p> Signup and view all the answers

Which part of the respiratory system expels mucus upward toward the pharynx?

<p>Respiratory mucosa with goblet cells (B)</p> Signup and view all the answers

How many levels of divisions are there in the bronchial tree?

<p>23 (D)</p> Signup and view all the answers

What is the main site of gas exchange in the lung?

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

Which bronchus is slightly larger and more vertical?

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

What is the last conducting portion of the respiratory system?

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

What is the function of the bronchi?

<p>To direct air into the lungs (D)</p> Signup and view all the answers

Which structure forms the wall of the trachea?

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

What is the function of the bronchioles?

<p>To divide into alveolar sacs (C)</p> Signup and view all the answers

What is the function of the alveoli?

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

What is the role of the capillaries in the lungs?

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

What is the approximate length of the trachea?

<p>11 cm (B)</p> Signup and view all the answers

What is the role of surfactant in the alveoli?

<p>To reduce surface tension (C)</p> Signup and view all the answers

What is the function of the respiratory bronchioles?

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

What is the function of the goblet cells in the trachea?

<p>To expel mucus upward toward the pharynx (A)</p> Signup and view all the answers

What is the function of the primary bronchi?

<p>To direct air into and out of the lungs (D)</p> Signup and view all the answers

What is the function of the trachea?

<p>To direct air through an open passageway into and out of the lungs (A)</p> Signup and view all the answers

Which structure in the respiratory tract is responsible for efficient gas exchange due to its thin walls?

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

What is the function of the respiratory membrane?

<p>To exchange gases between the alveolar air and blood capillaries (D)</p> Signup and view all the answers

What is the purpose of surfactant in the alveoli?

<p>To reduce surface tension and prevent collapse of the alveoli (B)</p> Signup and view all the answers

What is the primary function of the bronchi?

<p>To distribute air to the lungs interior (D)</p> Signup and view all the answers

What is the approximate number of alveoli estimated to be in our lungs?

<p>300 million (C)</p> Signup and view all the answers

What is the function of the cartilaginous rings in the respiratory system?

<p>To provide structural support (A)</p> Signup and view all the answers

What is the role of the capillaries in the lungs?

<p>To facilitate gas exchange with the alveoli (D)</p> Signup and view all the answers

What is the role of mucus in the respiratory tract?

<p>To cleanse, warm, and humidify air (D)</p> Signup and view all the answers

What is the last conducting portion of the respiratory system before reaching the alveoli?

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

What provides structural support to keep the alveoli open?

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

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser