Airflow-airway resistance and Dynamic compression

Question

Airway resistance = Flow Resistance - pick the wrong statement

Answer 1

Laminar flow in the acinus - low velocity and Reynolds number is low

Answer 2

Trachea-bronchi - turbulent flow - high velocity and high Reynolds number

Answer 3

decrease in the radii of the bronchioles in half, which increases their resistance by 4-fold

Answer 4

Airway resistance is the highest in the 3rd to 5th generation bronchi

Answer 5

Airway resistance decreases as lung volume increases during inspiration and vice versa during expiration

Answer 6

Airways are elastic so they increase diameter when Pleural pressure goes up

Answer 7

This is why it takes longer to exhale during passive breathing than to inhale

Answer 8

all of the above are correct

Answer 9

Inspiration is effort dependent

Answer 10

During expiration increase in effort produces increases in flow only during the initial quarter of the expiratory vital capacity

Answer 11

During expiration at low and moderate lung volumes - flow is maximal and is effort independent

Answer 12

all of the above are correct

Answer 13

When the pressure in airway is equal to pleural pressure Paw = Ppl

Answer 14

During Forced expiration - Upstream of EPP (toward alveoli) driving pressure, PA-P mouth - will move air out of the lungs

Answer 15

During Forced expiration - Downstream of EPP (toward mouth) PA -Ppl

Answer 16

all of the above are correct

Resource summary

	Created by radven about 9 years ago