Oxygenation

Question 1

Ventilation

Answer 1

The process of moving gases into and out of the lungs

Question 2

Perfusion

Answer 2

Relates to the ability of the cardiovascular system to pump oxygenated blood to the tissues and return deoxygenated blood to the lungs.

Question 3

Inspiration

Answer 3

Active process: stimulated by chemical receptors in the aorta

Question 4

Expiration

Answer 4

Passive process: depends on the elastic recoil properties of the lungs, requiring little or no muscle work

Question 5

Surfactant

Answer 5

A chemical produced in the lungs to maintain the surface tension of the alveoli and keep them from collapsing.

Question 6

Atelectasis

Answer 6

A collapse of the alveoli that prevents normal exchange of oxygen and carbon dioxide

Question 7

Chronic Obstructive Pulmonary Disease (COPD)

Answer 7

Patients who have this lose the elastic recoil of the lungs and thorax. Work of breathing increases. Decreased surfactant production.

Question 8

Compliance

Answer 8

The ability of the lungs to distend or expand in response to increases intraalveolar pressure

Question 9

Airway resistance

Answer 9

The increase in pressure that occurs as the diameter of the airways decreases from mouth/nose to alveoli. (asthma/tracheal edema)

Question 10

Diffusion

Answer 10

The process for the exchange of respiratory gases in the alveoli of the lungs and the capillaries of the body tissues.