The index to evaluate the excitability of an organ or tissue is ()
A. stimulation frequency
B. threshold potential
C. the threshold
D. stimulating time
E. stimulation intensity
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Vasopressin/antidiuretic hormone is produced mainly in the ()
A. neurohypophysis
B. macular densa
C. juxtaglomerular cell
D. adenohypophysis
E. supraoptic nucleus
The growth hormone is formed in ()
A. neurohypophysis
B. thiouracil
C. adenohypophysis
D. ouabain
E. supraoptic nuclei
F. TSH
G. kidney
H. TRH
I. lung 133 The activation of iodine is blocked by (A)
J. furosemide
Which are right in the following descriptions about the sodium pump? ()
A. it is also called as the sodium-potassium pump
B. it can remove K+ out the cell and take Na+ into the cell
C. it can transport Na+ and K+ at the same time
D. it is an ATPase
E. it is a special membrane protein.
The factors enhancing contractility of muscle are ()
A. Ca2+
B. caffeine
C. adrenaline
D. hypoxia
E. acidosis
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