10/23 Respiratory Tract - Dennis 2017 (Completed)

Question 1

What is the function of the conducting system?

Answer 1

Collects and warms air

Transmits that air into respiratory portion

Question 2

What are the components of the conducting system?

Answer 2

Everything north of and including the tertiary bronchioles (including sinuses)

Question 3

What is the function of the respiratory system?

Answer 3

To pass air to alveoli for gas exchange

Question 4

What are the structures of the respiratory system?

Answer 4

Alveolar sacs —> alveolar ducts —> respiratory bronchioles

Question 5

What cell type lines the airway of the respiratory tract?

Answer 5

Pseudostratified columnar ciliated epithelium

Question 6

What cells will be found in the respiratory tract? 6

Answer 6

Respiratory epithelium

Ciliated, columnar epithelial

Goblet cells

Question 7

What are goblet cells derived from? 7

Answer 7

They are a form of modified columnar epithelial cells

Question 8

What is contained within the stem of a goblet cell? 7

Answer 8

Nucleus

Organelles

Question 9

What fluid fills the pleural cavity between the parietal and visceral pleuras?

Answer 9

Serous fluid

Question 10

What are the only components found within the respiratory system? 10

Answer 10

Elastic fibers

Minimal Ciliated cells and smooth muscle

Question 11

Describe the make-up of primary bronchus. 13

Answer 11

Pseudostratified columnar ciliated cells shorter

Few goblet cells

Incomplete cartilage plates

Increased elastic fibers

Question 12

What are important characteristics of bronchioles?

Answer 12

Few goblet cells

No submucosa or cartilage

Prominent smooth muscle

Question 13

What is characteristic of terminal bronchioles?

Answer 13

Clara cells (produce surfactant)

Increase elastic fibers

Question 14

What epithelia makes up the bronchioles, terminal bronchioles, and respiratory bronchioles? 15, 16, 17

Answer 14

Bronchioles & terminal bronchioles:
—> simple columnar ciliated

Respiratory bronchioles —> simple cuboidal ciliated

Question 15

What epithelia makes up alveoli?

19

Answer 15

Simple squamous epithelia

Question 16

What is the alveolar septum? 19

Answer 16

Wall of alveolar capillaries surrounded by elastin and collagen

Question 17

What cells are found within alveoli?

Answer 17

Type 1 pneumocytes

Type 2 pneumocytes

Dust cells (φ)

Question 18

What components make up the respiratory membrane?

Answer 18

Alveolar epithelium

Capillary endothelium

(Fused basement membrane between these)

Question 19

Which pneumocyte is closely associated with capillaries and lines almost the entire alveolar surface allowing for gas exchange? 21

Answer 19

Type 1 pneumocytes

Question 20

What cell comprises 60% of alveoli epithelium and produces surfactant within the alveoli? 22

Answer 20

Type II Pneumotyctes

Question 21

you see a non-ciliated cell along the respiratory epithelium, what is it?

Answer 21

Either goblet cells or non-ciliated stem cells

Question 22

slide 6

Answer 22

non ciliated stem cells

goblet cells

Question 23

slide 7

Answer 23

goblet cell
nucleus
RER

Question 24

slide 9

Answer 24

mesothelium

Question 25

What type of tissue makes up mesothelium?

Answer 25

simple squamous epithelium

Question 26

What does it mean that the visceral pleura is continuous with the lung parenchyma?

Answer 26

instead of just covering the outside of the lungs the visceral pleura invaginates and covers different segments of lunch tissue

Question 27

slide 11

Answer 27

respiratory epithelium

LP - lamina propria
-rich in vasculature and lymphatic vesicles (MALT)

SM & G- submucosa (water based glands)

Question 28

start at 20:30

Answer 28

add