Physio Final Exam

1. Choose incorrect sentence: Cholecystokinin (CCK)

2. Hyperventilation results in the increase of arterial pO2 and reduction pCO2. What changes in diameter of cerebral vessels will be observed in these terms?

more pO2 / less pCO2

3. The value of Tiffeneau-Pinelli index (FEV1/FVC ratio) is predominantly determined by:

 calculated ratio used in the diagnosis of obstructive and restrictive lung disease

1. Anatomical dead space is:

194.Resistance in airways leads to

1. Obstruction in airways causes that

1. Volume of air inhaled into the lungs depends on pressure changes in a pleural cave and on lung compliance, thus the changes of pressure in the airways result in volume changes of the chest cage.

11. a preterm infant has a surfactant deficiency. Without surfactant, many of the alveoli collapse at the end of each expiration, which lead to pulmonary failure. Which of the following changes is present in a preterm infant, compared with a normal infant?

Alveolar surface tension  vs. pulmonary compliance 

--> CHOOSE THE RIGHT PAIR

a. Decreased vs. increased 

b. Increased vs. no change 

c. Decreased vs. no change 

d. Increased vs. decreased

2. anatomic dead space

Dead space= part in lung that does not participate in gas exchange 

3. partial pressure of O2 and CO2 in alveolar air equals - in arteries:

3. partial pressure of O2 and CO2 in alveolar air equals - in veins:

4. diffusion of oxygen and carbon dioxide is influenced by:

5. vital capacity is:

7. tidal volume during quiet breathing equals:

13. hypercapnia:

10. a chemosensitive are located in the medulla modulates respiration when the blood level of certain substances is not optional. The chemosensitive area responds to changes in the blood levels of which of the following substances?

--> CHOOSE CORRECT ANSWER:

Oxygen(O2)        Carbon Dioxide(CO2)        Hydorgen Ion (H+)

a. No                        yes                                     no

b. Yes                       yes                                     yes 

c. No                      yes                                   yes 

d. Yes                       yes                                      no 

1. peripheral chemoreceptors

6. switch off neurons that shorten inspiration

8. total lung capacity equals:

9. the basic rhythm of respiration is generated by neurons located in the medulla. Which of the following limits the duration of inspiration and increases respiratory rate?

4. Increase in CO2 concentration in blood will:

31. Anatomic dead space:

47. The form of hemoglobin that has carbon dioxide attached is called:

HbCO2

54. In the following reaction, what does A represent?CO2 + H2O <—-> H2CO3 <—> H+ + A

H2CO3 = carbonic acid

equation performed by carbonic anhydrase in the RBC 

57. Diffusion of oxygen and carbon dioxide is influenced by:

5. Physiologic role of the pneumataxic centre comprise all functions listed below EXCEPT:

6. In patients with chronic respiratory failure (i.e. with a permanent hypercapnia= elevated CO2 levels) the most powerful stimulation of respiratory centre results from

The Bohr effect causes that the affinity of hemoglobin for oxygen decreases and occurs when

Parasympathetic stimulation of tissues in walls of bronchioles causes:

Obturation in airways causes that

Surfactant:

Which of the below mentioned statements is incorrect

The significant reduction in lung diffusion capacity is manifested by

Hering-Breuer reflex is triggered by

1. If you treat a patient with bronchoconstriction using beta-agonist, a possible side effect which is:

70% of CO2 transported in body is in form of?

Most of Bicarbonates is formed in the:

Choose correct sentence:

9. Sudden decrease in atmospheric oxygen concentration will:

The symptom of overactivity of parasympathetic system is: