Voltage-gated calcium channels (VGCCs), tseem hu ua voltage-dependent calcium channels (VDCCs), yog ib pab pawg ntawm voltage-gated ion channels pom nyob rau hauv daim nyias nyias ntawm cov hlwb excitable (xws li, cov leeg, glial hlwb, neurons, thiab lwm yam.) nrog permeability rau calcium ion Ca2+.
qhov hluav taws xob-gated channel nyob rau hauv lub neuron nyob qhov twg?
Feem ntau, voltage-gated sodium (Nav) thiab voltage-gated potassium (Kv1 thiab KCNQ) raws yog nyob rau hauv the axon, thiab Kv2, Kv4, thiab hyperpolarization- activated cyclic nucleotide-gated channels (HCNs) nyob rau hauv cov dendrites.
Cov calcium channel nyob qhov twg ntawm cov neuron?
Cav2 tsev neeg: P/Q-, N-, thiab R-hom channels. Lub Cav2 raws yog qhia feem ntau hauv cov neurons. Lawv tam sim no ob qho tib si ntawm thaj chaw nquag ntawm presynaptic terminals, qhov chaw uas lawv ua rau cov neurotransmitter sai tso tawm, thiab ntawm lub cev ntawm tes thiab dendrites, qhov chaw uas lawv elicit depolarization.
pom cov calcium channel nyob qhov twg?
L-Hloov calcium channels muaj nyob rau hauv mob plawv thiab pob txha pob txha, hauv cov leeg nqaij leeg, thiab hauv qee lub cell secretory ntawm cov neuroendocrine system.
Vim li cas voltage-gated calcium channel ua hauv neurons?
Voltage-gated calcium channels yog thawj tus neeg nruab nrab ntawm depolarization-induced calcium nkagmus rau neurons. … Qhov no tso cai rau cov channel no ua kom tiav cov luag haujlwm tshwj xeeb hauv cov kab mob neuronal tshwj xeeb thiab ntawm qhov tshwj xeeb subcellular loci.
