Physiology II

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questions
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Zusammenfassung der Ressource

Frage 1

Frage
All of the following about bronchioles is true except?
Antworten
  • Has ciliated cells
  • has cartilage
  • has smooth muscle
  • no mucous production
  • has cilia
  • none of the above

Frage 2

Frage
Respiratory bronchioles - all of the following are true except?
Antworten
  • Belong to the respiratory zone
  • They are the 17-19 degree branches
  • has cilia, smooth muscle and cartilage
  • none of the above

Frage 3

Frage
Lung region with highest cross sectional area is alveoli
Antworten
  • True
  • False

Frage 4

Frage
Regarding alveolus
Antworten
  • Lined by a single layer of simples squamous epithelium - type I Pneumocytes
  • Type II pneumocytes are cuboidal and secrete surfactant
  • Clara/club cell are found and are similar to stem cell because they can divide and replace other clara cells
  • Alveoli do not contain cilia -> no mucociliary clearance
  • all of the above are correct

Frage 5

Frage
Regarding the circulating system
Antworten
  • Pulmonary capillary pressure = 10 mm of Hg, Pulmonary vein = 6 mmHg, LA = 5 mmHg, LV = 120/0
  • Systemic capillary pressure = 20 mmHg, Systemic Veins 15 mmHg, RA = 2 mmHg, RV = 25/0,
  • In fetus the Pulmonary pressures are very high and systemic pressures are low
  • Adult circulation the Pulmonary pressures are about 1/5 of Systemic circulation
  • All of the above are true
  • 1 and 2 are true

Frage 6

Frage
Alveoli are kept dry because
Antworten
  • Air pressure pushes the fluid out of the alveoli into the interstitium
  • Colloid osmotic pressure keeps the fluid in the capillary
  • Hydrostatic pressure in the capillary pushes fluid out into the interstitium
  • Surface tension in the alveolus pulls the fluid out into the alveolus
  • None of the above
  • all of the above

Frage 7

Frage
Secondary functions of respiratory system are conversion of angiotensin I to angiotensin II, reservoir of blood, maintain blood pH
Antworten
  • True
  • False
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