WorksheetsPL2 Pulmonary Circulation
Total questions: 23
Worksheet time: 23mins
Pressure in pulmonary circulation is ____ compared to systemic circulation.
lower
same
higher
Response to hypoxia in pulmonary arteries.
vasoconstriction
vasodilation
Characteristic features of pulmonary arteries.
narrow lumen
thin walls
lack vasoconstrictor tone
high peripheral resistance
Characteristic features of pulmonary arteries.
blood flow is pulsatile
shorter and wider capillaries
blood flow is continuous
longer and narrower capillaries
Characteristic features of pulmonary arteries.
Exchange of substances is across respiratory membrane
Exchange of substances is across endothelium
Interstitial fluid is absent
Interstitial fluid is present
Capillary pressure of pulmonary circulation
7 mmHg
17 mmHg
27 mmHg
37 mmHg
99% of blood that flow to lungs is from
coronary artery
pulmonary artery
pulmonary vein
bronchial artery
bronchopulmonary vein
Pulmonary capillary wedge pressure (PCWP) value higher than 18 mmHg indicates decompensated heart failure.
true
false
Blood spends about ____ to traverse (travel across) capillaries in resting condition.
0.75 s
0.5 s
less than 0.3 s
more than 0.3 s
Decreased pressure of pulmonary artery (PPA) will cause blood flow to
remain constant
increase
decrease
Increased pressure of alveolus (PA) will cause blood flow to
decrease
remain constant
increase
This zone of pulmonary blood flow is defined as those areas of the lung where alveolar pressure exceeds that of the pulmonary arterial pressure and pulmonary venus pressure.
Zone 1
Zone 2
Zone 3
Anatomical position of this zone of pulmonary of blood flow is more than or equals to 10 cm above midlevel of heart.
Zone 1
Zone 2
Zone 3
Anatomical position of this zone of pulmonary of blood flow is below 10 cm from midlevel of heart.
zone 3
zone 1
zone 2
Non-respiratory functions of pulmonary circulation.
reservoir of blood
removal of emboli
synthesis of angiotensin-converting enzyme
respiratory gas exchange
Neural regulation of pulmonary blood flow that causes vasoconstriction is by stimulation of which receptor?
α1
α2
β2
M3
Neural regulation of pulmonary blood flow that causes vasodilation is by stimulation of which receptors?
α1
α2
β2
M3
Chemical regulation of pulmonary blood flow that leads to vasoconstriction of pulmonary veins and arteries.
decreased PO2
decreased PCO2
increased H+
increased PCO2
Systemic hypoxia causes _____ of pulmonary artery.
constriction
dilation
Conditions causing pulmonary edema.
exercise at high altitude
left ventricle failure
mitral valve disesase
pneumonia
Cl2 and SO2
Causes of pleural effusion
blockage of lymphatic drainage
cardiac failure
increased pulmonary capillary oncotic pressure
infection
inflammation
This pulmonary circulation supplies systemic arterial blood to the trachea, the bronchial tree including the terminal bronchioles, the supporting tissues of the lung, and the outer coats (adventitia) of the pulmonary arteries and veins.
high pressure, low flow
low pressure, high flow
This pulmonary circulation supplies venous blood from all parts of the body to the alveolar capillaries where oxygen is added and carbon dioxide is removed.
low pressure, high flow
high pressure, low flow
