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Flashcards in Basic Pulmonary Physio Deck (15)
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1

Alveoli: number and purpose?

In adults, 300 million, sites of gas exchange in the blood

2

Which heart ventricle provides blood to the lungs?

Right ventricle, through the pulmonary arteries/arterioles and into the capillaries surrounding each alveolus

3

How many liters of air enters and leaves the alveoli per minute

4L/min

4

How much blood (cardiac output) is seen in the pulmonary arteries per minute?

5L/min of blood

5

Name the airway segments from the atmosphere to the upper airway

Atmosphere -> nose/mouth -> pharynx -> larynx which houses the vocal cords (and esophagus)

6

Names the LOWER airway segments from the larynx

Conducting zone: trachea -> mainstem bronchi -> bronchioles -> terminal bronchioles -> (resp zone) resp bronchioles -> alveolar ducts -> alveolar sacs

7

Which airways are supported by cartilaginous rings?

trachea and mainstem bronchi

8

which area of the respiratory tract does gas exchange occur?

The respiratory zone: respiratory bronchioles, alveolar ducts, alveolar sacs

9

What is the purpose of the oral and nasal cavities?

Trap airborne particles in nasal haris and mucus

10

How to do the respiratory bronchioles combat airborne particles

epithelial lining with cilia that constantly beat secretions upwards towards the pharynx

11

Innate protective mechanisms from airborne matter

1) mucous secretion
2) phagocytes
3) escalator ciliary motion
4) bronchiole constriction in response to irritation

12

How many types of alveolar cells are there?

Two, type I and type II

13

What is the purpose of type II alveolar cells

Surfactant production

14

what is the purpose of the conducting zone

1) low-resistance pathway for airflow
2) defense against microbes, noxious cehmicals, foreign material
3) warms and moistens air
4) phonates

15

What is roughly the equivalent of the total surface area of gas exchange of alveoli

Tennis court