Histo: Respiratory System Flashcards Preview

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Flashcards in Histo: Respiratory System Deck (81)
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1

How is elastic fiber concentration related to diameter?

Inversely related

2

Which way do elastic fibers in the lamina propria run? What about elastic fibers in smooth muscle?

Longitudinally; circular

3

Two functions of the respiratory system

1. provides conduit to transfer air
2. conditions the air (cleans, moistens, warms)

4

Most predominate respiratory epithelium. Continues until respiratory portion.

Ciliated columnar cells

5

This cell type has mainly serous secretion

Columar cell

6

These cells synthesize mucinogen, and hydrate it to turn it into mucous. They trap and remove bacteria and particles, and continue until terminal bronchiole.

Mucous goblet cells

7

This cell type has no cilia, but many microvilli

Brush cell

8

Two types of brush cells

1. one acts like a goblet cell and releases mucinogen
2. one has nerve endings on basal surface

9

This cell may be responsible for the sneeze reflex

Brush cell

10

These cells are thought to control mucous and seromucous secretion. May control vessel diameter.

Small granule cells

11

These cells rest on the basement membrane and do not reach the lumen. In this way, they are considered pseudostratified. They are stem cells!

Basal cells or immature cells

12

abnormal transformation of adult cells in a tissue
to a form which is not normal for that tissue. This
can be in response to a disease process, a physical,
or chemical event

Metaplasia

13

2 changes in respiratory epithelium of a smoker

1. increase in goblet cells due to pollutants
2. decrease in cilia due to CO2

14

Anterior portion of the nasal cavity

Vestibule

15

2 types of mucosa in the nasal cavity

1. respiratory
2. olfactory

16

Venous plexus in lamina propria that enlarge alternately on two sides of nasal cavity (about every 30 minutes) giving mucosa on occluded side time to recover from desiccation and help to direct air to the olfactory epithelium

Swell bodies

17

What 2 things do plasma cells release in the lamina propria?

IgA and IgE

18

Discuss what happens with IgE

IgE binds to its receptors on mast cells and basophils, and causes the release of inflammation mediators of the mast cells and basophils

19

T/F: Nasal cavity provides a site for drug delivery since there is a convenient access to a superficial venous plexus beneath the nasal cavity mucosa

True

20

Where are olfactory epithelium located?

On the roof of the nasal cavity and on the superior nasal conchae

21

bipolar neurons whose apical surfaces are modified to form the olfactory vesicle and olfactory cilia

Olfactory cell

22

These cells are stem cells for ALL olfactory epithelium

Basal cells

23

Where are Bowman's glands located? What is significant that occurs in these glands?

Located in the lamina propria; synthesis of an odorant binding protein (ODP)

24

Why is serous secretion important in Bowman's glands?

Dissolves odors and cleans the surface

25

Air spaces within cranial bone lined with respiratory epithelium


Paranasal sinuses

26

What are the cartilagenous plates of the larynx made up of?

Elastic (smaller) and hyaline (larger) cartilage

27

This structure connects the trachea with the pharynx

Larynx

28

Two functions of the larynx

- responsible for phonation (producing sounds) via the vocal cords
- prevents entry of food and fluids into the respiratory system

29

Do false vocal cords have glands and/or muscle?

They have glands and NO muscle

30

The false vocal cords are covered with (blank)

respiratory epithelium