A: Decreased velocity of nerve impulses
B: Generation of action potentials only at the nodes of Ranvier
C: Increased nonselective diffusion of ions across the axon membrane
D: Increased membrane capacitance
举一反三
- The myelin sheath of the peripheral nerve consists of A: Schwann cell membrane and cytoplasm B: only Schwann cell cytoplasm C: multiple layers of Schwann cell membrane D: only the lipid of Schwann cell membrane E: Schwann cell membrane and basal lamina
- The best choice as a significant consequence of the Crusades is which of the following? A: Decreased influence of the Church B: Increased interest in exploration C: Increased value of the common man D: Discouraged international trade
- Which of the following can relax muscles? A: activate Ca2+ channels of nerve endings B: promote ACh release of nerve endings C: activate ACh receptor-gated channel on the endplate membrane D: activate cholinesterase in the gap of the linker
- Through which of the following structure does nerve fibers conduct nerve impulses? A: Myelin sheath B: Axolemma C: Neurofilament D: Synaptic vesicle
- In a patient given a cardiac glycoside, which of the followings is/are important effects of the drug on the heart? A: Decreased atrioventricular conduction velocity B: Increased intracellular calcium C: Increased ectopic automaticity D: Increased force of contraction
内容
- 0
The assembly line significantly _________the assembly time per vehicle and _______the profit margin. A: decreased; increased B: increased; decreased C: increased；increased D: decreased；decreased
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Which of the following nerves is added to the tongue nerve? () A: Ear-temporal nerve B: Masseter nerve C: Buccal nerve D: CHORDA Tympani E: Inferior alveolar nerve
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Which is the following is NOT mentioned as a consequence of too little sleep? A: Dramatically B: Dysregulation in blood pressure C: increased blood flow to the brain D: increased inflammation in the body
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Which of the following contributes to an increase in labor productivity? A: increased consumption expenditure B: decreased investment C: increased capital stock D: All of the above contribute to an increase in labor productivity.
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Oligodendrocytes make myelin, a fatty substance that insulates nerve axons and speeds the conduction of impulses along nerve fibers.