Blood System

The amount of thrombin produced in the normal situation depends on the presence:
A. Plasmin
B. Plasminogen
C. Thromboplastin
D. Calcium ions
E. Noradrenaline

Survival time of the erythrocytes is:
A. 6 months
B. 1 week
C. 120 days
D. 2 days
E. 1 year

The most important function of neutrophiles and monocytes is:
A. Blood clotting
B. Production of antibodies
C. Phagocytosis
D. Inactivation of oxygen radical reactive species produced by bacteria
E. Tachyphylaxis

Hematocrit means:
A. Percentage of plasma in the blood
B. Ratio of the volume of blood and ECT
C. Percentage of red blood cells in the blood
D. Percentage of de novo formed erythrocytes
E. Mean specific gravity of blood

hrombocytes produce 1. Plasminogen, 2. Fibrinogen, 3. Prothrombin, 4. Thromboplastin:
a. 1,2,3
b. 1,3
c. 2,4
d. 4
e. 1,2,3,4

O2 dissociation from the Hb is facilitated in metabolically active tissue:
A. More by decrease of pH than increase of PCO2
B. By concentration of glucose
C. By increase of PCO2 and decrease of pH
D. By decrease of tissue temperature

Dissociation curve of O2 from Hb is shifted to the right
A. By the loss of plasma proteins
B. By decrease of PCO2
C. By increase of PCO2
D. By increase of N2
E. By increase of pH

Most of the venous CO2 is in the form of:
A. Bound to Hb
B. Dissolved CO2
C. Carbonate
D. Carbonic acid
E. Bicarbonate

Which of the following factors increases the O2 dissociation from Hb in metabolically active tissue?
a. Low PO2
b. Low pH
c. High PCO2
d. Nerve stimulation

After CO2 is transported in the blood:
A. H+ and bicarbonate are rapidly formed in erythrocytes
B. Bicarbonate is rapidly formed
C. Ventilation is decreased
D. Carbominocompouds are rapidly formed
E. There is no dissolved CO2 in plasma in steady state