Physiology章节测试课后答案2024春

第二章测试

1.The manner that oxygen enter into the cell is （ ）
A:exocytosis B:simple diffusion C:endocytosis D:facilitated diffusion E:active transport
答案:B
2.How many the energy will be used by Na+ pump in a cell?（ ）
A:20% - 30% B:5% - 10% C:30% - 40% D:10% - 20% E:60% - 70%
答案:A
3.The imbalance distribution of Na+ and K+ inside and outside the cell it due to _____.（ ）
A:the effect of ATP B:the effect of Na+ pump C:the increase of the permeability of the cell membrane to Na+ when excited D:the result that Na+ and K+ moving across the cell membrane by facilitated diffusion E:the high permeability of cell membrane to K+ in rest condition
答案:B
4.The neurotransmitter at the neuromuscular junction is （ ）
A:ACh B:adrenaline C:5-HT D:noradrenaline E:GABA
答案:A
5.During the absolute refractory period, the excitability of tissues is （ ）
A:greater than the normal B:equal to the normal C:zero D:less than the normal E:infinity
答案:C
6.The amplitude of AP of the neuron is close to（ ）
A:overshoot value B:the sum of RP and Na+ equilibrium potential C:the difference of RP and Na+ equilibrium potential D:K+ equilibrium potential E:Na+ equilibrium potential
答案:C
7.If the duration of an action potential of the myelinated nerve fiber lasts 2ms，the number of the action potentials per second cannot exceeds ___ in theory.（ ）
A:300 times B:600 times C:200 times D:500 times E:400 times
答案:D
8.In the depolarization phase of an action potential, Na+ moves into the cell by ___.（ ）
A:the facilitated diffusion mediated by channel B:secondary active transport C:endocytosis D:simple diffusion E:the facilitated diffusion mediated by carrier
答案:A
9.The depolarizing phase of AP of a neuron is formed by（ ）
A:Cl- influx B:K+ efflux C:Na+ influx D:Ca2+ influx E:deactivation of Na+ channel
答案:C
10.In which period of the preceding excitation in a nerve fiber, the next excitation cannot appear?（ ）
A:the relative refractory period B:the subnormal period C:the absolute refractory period D:the supranormal period E:the effective refractory period
答案:C