Respiratory System Parts Quiz by Prof. Ayoub Bazzaz

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What type of epithelium is found in the secondary bronchi?

Simple squamous epithelium

Simple low columnar epithelium (correct)

Simple ciliated cuboidal epithelium

Simple non-ciliated columnar epithelium

Which type of cells are found in the terminal bronchioles?

Simple non-ciliated low columnar or cuboidal cells

Simple ciliated cuboidal epithelium with goblet cells

Simple columnar epithelium with Clara cells

Simple squamous (Type-I) and low cuboidal epithelium cells (Type-II) (correct)

What is the main function of the Type-II cells found in the alveoli?

Regulate blood flow

Produce surfactant (correct)

Provide structural support

Facilitate gas exchange

Which type of bronchi have segments of hyaline cartilage?

Primary bronchi Signup and view all the answers

What is the main function of the Clara cells found in the bronchioles?

Regulate mucus production Signup and view all the answers

What are the tiny air sacs in the lungs called?

Alveoli Signup and view all the answers

Which of the following structures is lined with pseudostratified ciliated columnar epithelium?

Trachea Signup and view all the answers

What is the function of the smooth muscle fibers surrounding the trachea and bronchi?

To control the diameter and length of the airways Signup and view all the answers

Which of the following structures connect the trachea to the lungs?

Bronchial tubes Signup and view all the answers

What is the primary function of the diaphragm in the respiratory system?

To facilitate the movement of air into and out of the lungs Signup and view all the answers

Which of the following structures has a layer of C-shaped hyaline cartilage forming its wall?

Trachea Signup and view all the answers

What is the primary function of the alveoli?

To facilitate gas exchange between air and blood Signup and view all the answers

Which of the following best describes the structure of the bronchioles?

They have a layer of smooth muscle surrounding their lumens Signup and view all the answers

What is the function of the Clara cells found in the respiratory bronchioles?

To secrete surfactant for reducing surface tension Signup and view all the answers

Approximately how many alveoli are present in a typical pair of human lungs?

700 million Signup and view all the answers

What is the role of the smooth muscle surrounding the terminal bronchioles?

To facilitate the movement of air in and out of the lungs Signup and view all the answers

What is the approximate average diameter of an adult alveolus?

200 micrometers Signup and view all the answers

Respiratory System Parts Quiz by Prof. Ayoub Bazzaz

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