Respiratory Histology Flashcards

1
Q

What is the conducting portion of the RT?

A

Nasal cavities, Nasopharynx, Layrnx, Trachea, Bronchi, Primary bronchioles

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2
Q

What is the respiratory portion of the RT?

A

Secondary bronchioles, alveolar ducts, alveolar sacs, alveoli

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3
Q

What kind of epithelium lines most of the RT?

A

pseudostratified columnar ciliated (PSCC)

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4
Q

What is the structure of the trachea?

A

PSCC with goblet cells lining, Horse-shoe cartilage rings with trachealis muscle to close the loop (smooth muscle)

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5
Q

What is the structure of the main bronchus?

A

PSCC with goblet cells lining, Cartilage begins as complete rings and then transitions to incomplete as it moves distally, spiral smooth muscle

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6
Q

What is the structure of the bronchioles?

A

<1mm diameter, simple columnar/cuboidal epithelium, no glands or cartilage, prominent smooth muscle

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7
Q

What are the funcitons of the 2 types of cells in alveoli?

A

type 1 - gas exchange

type 2 - surfactant production

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