Quiz
Physiology II
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Questions in this quiz (7)
1All of the following about bronchioles is true except?
- AHas ciliated cells
- Bhas cartilage
- Chas smooth muscle
- Dno mucous production
- Ehas cilia
- Fnone of the above
2Respiratory bronchioles - all of the following are true except?
- ABelong to the respiratory zone
- BThey are the 17-19 degree branches
- Chas cilia, smooth muscle and cartilage
- Dnone of the above
3Lung region with highest cross sectional area is alveoli
- ATrue
- BFalse
4Regarding alveolus
- ALined by a single layer of simples squamous epithelium - type I Pneumocytes
- BType II pneumocytes are cuboidal and secrete surfactant
- CClara/club cell are found and are similar to stem cell because they can divide and replace other clara cells
- DAlveoli do not contain cilia -> no mucociliary clearance
- Eall of the above are correct
5Regarding the circulating system
- APulmonary capillary pressure = 10 mm of Hg, Pulmonary vein = 6 mmHg, LA = 5 mmHg, LV = 120/0
- BSystemic capillary pressure = 20 mmHg, Systemic Veins 15 mmHg, RA = 2 mmHg, RV = 25/0,
- CIn fetus the Pulmonary pressures are very high and systemic pressures are low
- DAdult circulation the Pulmonary pressures are about 1/5 of Systemic circulation
- EAll of the above are true
- F1 and 2 are true
6Alveoli are kept dry because
- AAir pressure pushes the fluid out of the alveoli into the interstitium
- BColloid osmotic pressure keeps the fluid in the capillary
- CHydrostatic pressure in the capillary pushes fluid out into the interstitium
- DSurface tension in the alveolus pulls the fluid out into the alveolus
- ENone of the above
- Fall of the above
7Secondary functions of respiratory system are conversion of angiotensin I to angiotensin II, reservoir of blood, maintain blood pH
- ATrue
- BFalse
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- ivenkat
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