Respiratory System - Ventilation

Question 1

Ventilation consists of

Answer 1

Inhalation

Exhalation

Question 2

Movement air is achieved due to

Answer 2

pressure differences between the atmosphere and the lungs

Question 3

Pressure differences are caused by the

Answer 3

contraction and relaxation of the respiratory muscles

Question 4

Muscles inhalation and action

Answer 4

Move ribcage upwards and outwards:
Sternocleidomastoid
Scalenes
External intercostals

Diaphram moves downwards

Question 5

Muscles of exhalation and action

Answer 5

Pulls ribcage down and in:
Intercostals

Diaphragm relaxes and moves upwards

Abdominals (4) compress abdomen and push diaphragm upwards

Question 6

Boyles law

Answer 6

PV = k

Question 7

If volume goes down

Answer 7

pressure must go up

AND vice versa

Question 8

Alveolar pressure on inhalation

Answer 8

~758mmHg

Question 9

Atmospheric pressure installation

Answer 9

~760mmHg

Question 10

Factors that affect ventilation

Answer 10

Alveolar surface tension
Lung Compliance
Airwar Resistance

Question 11

Long conditions that cause low lung compliance

Answer 11

Emphysema
Pulmonary fibrosis
Reduced surfactant

Question 12

Disease condition that causes reduced airway diameter (resistance)

Answer 12

Asthma
Chronic bronchitis
Emphysema

Question 13

Spirometer measures

Answer 13

lung volumes during forceful breathing