题目内容

Neurotrophic effects()

A. refer to the influence of the nerve on the functional activities of the dominating tissue
B. achieved by releasing the neurotransmitter or neuromodulator through the nerve endings
C. rely on the regular release of neurotrophic factors
D. can be blocked by continuous application of local anesthetics
E. It is not easy to detect, and it can be clearly displayed after cutting off the nerve

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Fast anterograde axoplasmic transport mainly transport()

A. organelle with membrane
B. transmitter synthase
C. microfilaments and microtubules
D. neurotrophic factors
E. cell metabolites

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Which of the following description is correct about the characteristics of nerve fiber excitation conduction?()

A. only one-way conduction from cell body to terminal
B. without interference among fibers in nerve trunk
C. as long as the structure is intact, normal excitation can be conducted
D. is not affected by the changes of factors in internal environmental
E. When stimulated continuously, the conductive capacity decreases rapidly

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Among the following items, the effective glomerular filtration pressure can be reduced by()

A. increase of plasma crystal osmotic pressure
B. increase of plasma colloid osmotic pressure
C. decrease of hydrostatic pressure in renal capsule
D. increase of glomerular capillary blood pressure
E. increase of colloidal osmotic pressure in renal capsules

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The effective stimulus of central chemoreceptors is ()

A. PCO2 in blood
B. PO2 in blood
C. H+ in blood
D. PCO2 in cerebrospinal fluid (CSF)
E. H+ in cerebrospinal fluid (CSF)

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