The mechanism of sodium and water retention during edema is（）
A. Increased capillary hydrostatic pressure
B. Plasma colloid osmotic pressure drops
C. Blockage of lymphatic drainage
D. Increased capillary wall permeability
E. glomerulotubular imbalance
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The strongest buffer system which buffers volatile acids in blood is（）
A. HCO3-/H2CO3
B. Hb- /HHb & HbO2-/HHbO2
C. Pr-/HPr
D. Organic phosphate
E. HPO42-/H2PO4-
The condition that does not lead to hypokalemia is（）
A. No food for a long time
B. Frequent vomiting
C. Increased aldosterone secretion
D. Acute acidosis
E. Large dose of insulin
The mechanism of depolarization block in patients with hyperkalemia is（）
A. The absolute value of resting membrane potential approaches to the threshold potential
B. Increased distance between resting membrane potential and threshold potential
C. Increased absolute value of resting membrane potential
D. Increased threshold potential
E. Decreased threshold potential
The factor which is essential to cause the disease and determine the specificity of the disease is called（）
A. Cause of a disease
B. Condition of a disease
C. Precipitating factor of a disease
D. Internal cause of a disease
External cause of a disease
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