week 10 lung function in health

Question 1

what do obstructive lung disease effect in the lungs and name 3 examples COPD

Answer 1

• difficulty with exhalation
• increased airway resistence

asthma
emphysema
chronic bronchitis

Question 2

what do restrictive lung disease effect in the lungs and name 3 examples

Answer 2

• difficulty with exhalation
• impaired lung expansion
• impaired lung tissue

fibrosis
pleaural effesion/pleurisy
Atelectasis

Question 3

what is pulmonary fibrosis

Answer 3

• resictive disease resulting in reduced lung expansion

- exposure to irritants eg asbestos

Question 4

what is chronic bronchitis

Answer 4

hypersecretion of mucus and chronic productive cough for at least 3 months

Question 5

what is emphysema

Answer 5

permanent enlargement of airways in the respiratory region
- has to do with pathophysiology
- break down of elastic fibres =elastic recoil
- reduced elastic recoil = decrease surface tension and elastic fibres
which then struggles with expiration as recoil is working with it(muscle)

Question 6

what are the symptoms of COPD

Answer 6

• obstruction (mucus constriction/ collapse
• difficultly during expiration
• reduced gas exchange
• ventilation- perfusion mis-match

Question 7

what is dynamic airway closure

Answer 7

• snap shut when the pressure is low volume (when expiring) to keep residual volume to to stop collapse of airway

Question 8

what is early small airway closure

Answer 8

when closure occurs before normal quantity of air is expired

Question 9

what is early small airway closure caused from

Answer 9

• increased resistance to airflow (airway diamter/asthma)

- increased intrapleural pressure (decreased elastic recoil/emphysema)