Human Trachea Anatomy

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Questions and Answers

What is the primary component of the tracheal cartilages?

  • Fibrocartilage
  • Columnar epithelial tissue
  • Hyaline cartilage (correct)
  • Elastic cartilage

How many C-shaped pieces of cartilage are typically found in the trachea?

  • 16 to 20 (correct)
  • 12 to 15
  • 18 to 22
  • 10 to 12

What is the main function of the dense connective tissue in the trachea?

  • To filter out dust and debris
  • To facilitate gas exchange
  • To regulate airflow
  • To provide structural support (correct)

Which of the following is NOT a characteristic of the trachea?

<p>It is composed of smooth muscle tissue (C)</p> Signup and view all the answers

What type of epithelial cells line the trachea?

<p>Ciliated columnar epithelial cells (C)</p> Signup and view all the answers

What type of epithelium lines the trachea?

<p>Ciliated pseudostratified columnar (A)</p> Signup and view all the answers

Which of the following cells is responsible for producing surfactant?

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

What is the function of goblet cells in the trachea?

<p>To secrete mucus (D)</p> Signup and view all the answers

What is the function of the basement membrane in the trachea?

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

Which of the following cell types is NOT found in the tracheal epithelium?

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

What type of epithelium lines the bronchi?

<p>Ciliated, pseudostratified columnar epithelium (B)</p> Signup and view all the answers

Which cells are interspersed with the epithelial cells in the bronchi?

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

What is the similarity between the trachea and bronchi?

<p>Both are lined by ciliated, pseudostratified columnar epithelium (D)</p> Signup and view all the answers

What is the function of ciliated, pseudostratified columnar epithelium in the bronchi?

<p>To move mucus and debris out of the lungs (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic of the bronchi?

<p>Located in the nasopharynx (D)</p> Signup and view all the answers

Flashcards

Tracheal cartilages

Hyaline cartilage

C-shaped cartilage pieces

16 to 20

Dense connective tissue function

To provide structural support

Trachea characteristic

It is composed of smooth muscle tissue

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Trachea epithelial cells

Ciliated columnar epithelial cells

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Epithelium lines the trachea

Ciliated pseudostratified columnar

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Surfactant production

Clara cells

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Goblet cells function

To secrete mucus

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Basement membrane function

To provide structural support

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Tracheal epithelium cell types

Squamous cells

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Epithelium lines the bronchi

Ciliated, pseudostratified columnar epithelium

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Cells interspersed with the epithelial cells in the bronchi

Goblet cells

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Trachea and bronchi similarity

Both are lined by ciliated, pseudostratified columnar epithelium

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Ciliated Function

To move mucus and debris out of the lungs

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Bronchi Characteristic

Located in the nasopharynx

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Study Notes

Tracheal Structure

  • The trachea is formed by 16 to 20 C-shaped pieces of hyaline cartilage connected by dense connective tissue.

Tracheal Lining

  • The trachea is lined by respiratory epithelium, which is ciliated pseudostratified columnar in structure.
  • The respiratory epithelium consists of various cell types, including: • Goblet cells • Brush cells • Endocrine cells • Surfactant-producing cells (Clara cells) • Serous cells • Basal cells
  • The epithelium rests on a basement membrane.

Bronchi Structure

  • Bronchi are histologically similar to the trachea.
  • They are lined by ciliated, pseudostratified columnar epithelium, also known as respiratory epithelium.
  • Goblet cells are interspersed throughout the epithelium.

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