3378193
Questão 1
Questão
All of the following about bronchioles is true except?
Responda
-
Has ciliated cells
-
has cartilage
-
has smooth muscle
-
no mucous production
-
has cilia
-
none of the above
Questão 2
Questão
Respiratory bronchioles - all of the following are true except?
Responda
-
Belong to the respiratory zone
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They are the 17-19 degree branches
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has cilia, smooth muscle and cartilage
-
none of the above
Questão 3
Questão
Lung region with highest cross sectional area is alveoli
Responda
- True
- False
Questão 4
Questão
Regarding alveolus
Responda
-
Lined by a single layer of simples squamous epithelium - type I Pneumocytes
-
Type II pneumocytes are cuboidal and secrete surfactant
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Clara/club cell are found and are similar to stem cell because they can divide and replace other clara cells
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Alveoli do not contain cilia -> no mucociliary clearance
-
all of the above are correct
Questão 5
Questão
Regarding the circulating system
Responda
-
Pulmonary capillary pressure = 10 mm of Hg, Pulmonary vein = 6 mmHg, LA = 5 mmHg, LV = 120/0
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Systemic capillary pressure = 20 mmHg, Systemic Veins 15 mmHg, RA = 2 mmHg, RV = 25/0,
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In fetus the Pulmonary pressures are very high and systemic pressures are low
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Adult circulation the Pulmonary pressures are about 1/5 of Systemic circulation
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All of the above are true
-
1 and 2 are true
Questão 6
Questão
Alveoli are kept dry because
Responda
-
Air pressure pushes the fluid out of the alveoli into the interstitium
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Colloid osmotic pressure keeps the fluid in the capillary
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Hydrostatic pressure in the capillary pushes fluid out into the interstitium
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Surface tension in the alveolus pulls the fluid out into the alveolus
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None of the above
-
all of the above
Questão 7
Questão
Secondary functions of respiratory system are conversion of angiotensin I to angiotensin II, reservoir of blood, maintain blood pH
Responda
- True
- False
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