Respiratory Anatomy

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What is the Conducting Zone of the Respiratory System?

• Respiratory passageways that convey air

• Filter, humidify, and warm incoming air

What is the Respiratory Zone of the Respiratory System?

• Site of gas exchange in the lungs

• Includes structures that have alveoli

First of three Sections of the Pharynx

Nasopharynx

Second of three Sections of the Pharynx

Oropharynx

Third of three Sections of the Pharynx

Laryngopharynx

Two Tonsil types in the Oropharynx

Palatine & Lingual tonsils

Traits of the Nasopharynx

• Superior to the point where food enters

• Only an air passageway

• Closed off during swallowing

Traits of the Laryngopharynx

• Passageway for both food and air

• Stratified squamous epithelium

• Continuous with the esophagus and larynx

Traits of the Oropharynx

• Epithelium- Stratified squamous epithelium

• Extends from soft palate to the epiglottis

First of two types of Epithelium in the Larynx

Stratified Squamous (superior portion)

Second of two types of Epithelium in the Larynx

Pseudostratified ciliated columnar (inferior portion)

What is the Carina

Marks where trachea divides into two primary bronchi

(Made of Pseudostratified ciliated columnar)

What is A

Mucosa

What is B

Pseudostratified Columnar Epithelium

What is C

Submucosa

What is D

Hyaline Cartilage

First of three types of Alveolar Cells

Type 1 Alveolar Cells

Second of three types of Alveolar Cells

Type 2 Alveolar Cells

Third of three types of Alveolar Cells

Alveolar Macrophages

Description of Type 1 Alveolar Cells

Single layer of simple squamous epithelial cells

Description of Type 2 Alveolar Cells

Are cuboidal epithelial cells that secrete Surfactant which reduces surface tension within alveoli

Description of Alveolar Macrophages

Remove tiniest inhaled foreign particles

What does Emphysema do?

Destroys alveolar walls and loses lung elasticity