Respiratory Tract Flashcards

(41 cards)

1
Q

What is respiratory epithelium

A

Pseudostratified columnar ciliated epithelium with goblet cells

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2
Q

What is the function of the nose

A

Filtration
Humidifying
Olfaction 

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3
Q

 Where does the respiratory epithelium begin in the nose

A

Deep to where the nose sticks out

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4
Q

What epithelium is in the roof of the nasal cavity

A

Olfactory epithelium

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5
Q

What is the difference between respiratory epithelium and olfactory epithelium

A

Olfactory epithelium doesn’t have goblet cells

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6
Q

What cilia are present in olfactory epithelium

A

Stereocilia which are non-motile

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7
Q

What do the serious glands of Bowman do

A

Secrete a watery fluid which helps to wash the surface clean

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8
Q

What are the olfactory receptor cells

A

Club shaped ciliated olfactory vesicles that are bipolar neurons

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9
Q

What are the functions of the nasopharynx

A

Gas transport
humidification
warming

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10
Q

What are the nasal sinuses called

A

Frontal
ethmoid
maxillary
Sphenoid

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11
Q

What is the function of the nasal sinuses

A

Lower the weight of the skull
add resonance to the voice
humidify and warm inspired air

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12
Q

What is the larynx formed from

A

Almost entirely Hyline cartilage

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13
Q

What is the epi-glottis formed from

A

Elastic cartilage

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14
Q

Is the larynx above or below the epiglottis

A

it’s below

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15
Q

What part of the larynx isn’t lined by respiratory epithelium

A

The vocal chords

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16
Q

What are the vocal cords lined by

A

Stratified squamous epithelium

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17
Q

Where would you find Reinke’s space

A

In the vocal chords

18
Q

What muscle is associated with vocal chords

A

the vocalis muscle

19
Q

What is cartilage is in the trachea

A

Hyline cartilage

20
Q

What is adjacent to the hyaline cartilage in the respiratory tract

A

Perichondrium

21
Q

What muscle fills the gap between the C-shaped rings of the trachea

A

The trachealis 

22
Q

What is the epithelium of the bronchioles

A

Ciliated columnar epithelium

23
Q

Where would you find Clara cells

A

The bronchioles

24
Q

What do the respiratory bronchioles do

A

Link the terminal bronchioles to the alveolar ducts

25
How many alveoli are there per lung
150-400 million
26
What is most of the cell surface area of the alveoli lined by
Type 1 pneumocytes - 90%
27
What type of cells are type 1 pneumocytes
Squamous epithelial cells
28
How much of the cell population do the type 1 pneumocytes
40%
29
What do the type 2 pneumocytes do
Produce surfactant
30
 Which alveolar cell has more organelles
Type II alveolar cells
31
What is the purpose of surfactant
to lower surface tension in the lungs | Makes it easier to inflate the lungs
32
When is surfactant first produced in a fetus
28 weeks
33
What are the cells of the alveoli
Type one and two pneumocytes and alveolar macrophages
34
Where are alveolar macrophages derived from
Blood monocytes
35
How thick is the blood air barrier in the alveoli
200 - 800 nm
36
What are the layers of the blood air barrier
Surfactant cell membrane of the type 1 pneumocyte cytoplasm of a type 1 pneumocytes cell membrane of the type 1 pneumocyte Basement membrane Cell membrane of the vascular endothelial cell Cytoplasm of the vascular endothelial cell Cell membrane of the vascular endothelial cell
37
What are pores of Kohn
Holes between alveoli
38
What is the function of the pores of Kohn
They help equalise pressure between alveoli | Help to inflate easily and evenly
39
What is the pleura made up of
Flat mesothelial cells
40
Where does the visceral pleura line
The outside of the lungs
41
What does the parietal pleura line
The inner chest wall