Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Dr West Pulmo videos > Video 1 Structure and function > Flashcards

Video 1 Structure and function Flashcards

1
Q

Functions of lungs?
which is most important

A

gas exchange*
Filters blood
metabolic functions
reservoir for blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What happens at the blood gas barrier? Where is it located?

A

Diffusive gas exchange
alveolar walls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the depicting?

A

Alveoli with red blood cells lining the walls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is this picture depicting?
What is the dark area?
lighter area?

A

Alveolar capillary
red blood cell
plasma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The wall of the alveolar capillary is known as the?
What is on either side?

A

blood gas barrier
gas and blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

T/F: One side of the capillary is thinner than the other?

A

True; one side is polarized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The outermost layer of the blood gas barrier is called _______and the innermost layer is called the ______

A

alveolar epithelium
capillary endothelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the arrow pointing to?

A

The nucleus of the type 1 alveolar epithelial cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the arrow pointing to?

A

The nucleus of the capillary endothelial cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is between the alveolar epithelium and the
capillary endothelium

A

interstitium/ extracellular matrix

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the interstitium composed of?

A

the fusion of the basement membranes of the alveolar epithelium and the capillary endothelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the most important constituent in the interstitium? why is it important?

A

type 4 collagen in the basement membrane; it is responsible for the strength of the blood gas barrier

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the arrow pointing to

A

collagen fibrils

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Approximate area of the blood gas barrier in the lungs?
Approximately how many alveoli?

A

50-100 m^2
500 million

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The trachea is constructed of

A

cartilaginous rings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe the posterior trachea

A

membranous

17
Q

what is the reason for the difference in color of the vessels?

A

blue is deoxygenated blood (pulmonary artery) and red is oxygenated (pulmonary vein)

17
Q

The region of the lung where there are alveoli

A

parenchyma

17
Q

T/F: Alveoli are attached to airway walls

A

true

18
Q

Goblet cells are responsible for dispensing

A

mucous

19
Q

Clara cells are thought to serve what function?

A

Secrete a substance that contributes to the mucous lining layer

20
Q

Compare the cells in the bronchus to the bronchioles

A

Columnar cells are in the bronchus (tall) and cuboidal are in the bronchiolus

21
Q

What kind of cells make up the alveoli?
Are they cilliated?

A

squamous cells
no

22
Q

Is this a type I or type II alveolar epithelial cell?
What is the white ring around the cell?

A

type II
microvilli

23
Q

Type I alveolar epithelial cells are responsible mainly for

A

structure of alveoli

24
Q

What is the role of surfactant? Where does the precursor of surfactant secrete from?

A

reduces surface tension and confers stability
type II alveolar cells

25
Q

What is the role of the alveolar macrophage?

A

Moves around the surface of the alveoli to phagocytose particles, engulf foreign particles, and keeps the alveolar surface clean

26
Q

which cell has a higher metabolic rate? type 1 or type 2 alveolar cells?

A

type 2 because theyre producing surfactant

27
Q

What is the arrow pointing to? How can you tell?

A

Surfactant remnant
onion like outer layers

28
Q

According to the Weiber Model of airways all the airways divide ______

A

dichotomously

29
Q

What is the unit of gas exchange?

A

asanous

29
Q

The conducting zone does or does not take part in gas exchange? why not? aka?

A

Does not; there are no alveoli
anatomic dead speace

29
Q

Alveolar duct walls are lined with

A

alveoli

30
Q

Volume of the anatomic dead space?

A

150 ml

31
Q

Volume of the respiratory zone

A

3 L

32
Q

Compare the pulmonary artery to a systemic artery

A

It has thinner walls with less smooth muscle since there are lower pressures there

33
Q

The ________ circulation takes the whole of the cardiac output

A

pulmonary

34
Q

How much blood flows through the lungs?

A

5 L/min

35
Q

Bronchial arteries come off the ______ or ______

A

aorta
intercostal arteries

Dr West Pulmo videos (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions