Basic Structure of the Respiratory System Flashcards

1
Q

What are the bony structures underlying the epithelial layer on the lateral side of the nasal cavities called?

A

Conchae

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2
Q

Describe the role of the nasal cavities.

A

They warm and humidify the air passing through the nasal cavities.

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3
Q

Describe the resistance of the nasal cavities and the implications for exercise.

A

High resistance - when exercising, breathing is mainly done through the mouth because that is a path of lower resistance and more water is lost

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4
Q

What are the paranasal sinuses? What is their role?

A

4 sets of blind-ended out-pocketings of the lateral walls of the nasal cavities
Four Paranasal Sinuses: Frontal, Maxillary, Ethmoid, Sphenoid
They reduce the weight of the facial bones, provide a crumple zone for facial trauma, act as resonators for the voice and insulate sensitive structures from the rapid temperature fluctuations in the nasal cavities.

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5
Q

What are the three parts of the pharynx and where are they found?

A

Nasopharynx - behind the nasal cavities
Oropharynx - posterior to the tongue, consists of lymphoid tissue
Laryngopharynx - after the epiglottis

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6
Q

What is the larynx?

A

Cartilaginous structure that is supported from the roof of the mouth from the hyoid bone

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7
Q

What structure is attached to the vocal ligaments which open and close entry to the larynx?

A

Arytenoid cartilage

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8
Q

How many cartilage rings are around the trachea?

A

Around 20

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9
Q

Describe the anterior and posterior lining of the trachea.

A

Anterior lining is epithelium

Posterior lining has trachealis muscle - this is needed for swallowing

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10
Q

Describe the changes in number of cartilage rings and smooth muscle that changes with branching of the bronchi.

A

Number of cartilage rings decreases

Amount of smooth muscle increases

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