He aha te mea te kiko io

whakaaro kiko Nervous (NT) te ki hei te huānga hanganga o te pūnaha io, e ahu i te roro, me te mutu mutunga karere. Ki te whakaaro tatou ki te hanganga o te kiko karere, kia tuhia ai kia ai ngā reira o ngā pūtau io huaina neurons e pā ana ngā pūtau apatoko (neiroglii), me i muka me te kūmuri roto reira hoki ngā oko toto, me te kiko tūhonohono.

Tipu i te ectoderm, NT hanga te pokapū io. E kohia te reira i pūtau ki ngā rōpū, ko te kupu, i reira ko te mea hina, e kohia nga muka ki paihere, hanga he totoka ma.

āhuatanga kiko Nervous e kawenga me te kārangirangi. Na tomo i te pūtau whakaongaonga e puta ki ngātere, ka e kia hanga ki te whekau e hāngai ana, te kopa uaua ranei. Pūtau tukanga HT, me te mōhiohio taonga, a kia tiki i te reira i te mahara, ka hiahiatia.

Kei te neuron o te karihi, me tona cytoplasm a tawhio noa (perikaryon), i reira te pungaraungao, ribosomes, golgi matatini, me ētahi atu Nissl rawa. Mawehe atu i pihi reira, tei faahoho'ahia i rua momo.

1.Dendridy - ki runga ki a ratou te whakawhiti i te torohaki ki te tinana pūtau. E ratou he roa o 0.2 microns.

whakawhiti he pini runga i te tinana pūtau - 2. neurite (axon). mutu te reira ki manga hanga hononga ki ētahi atu neurons te kopa okana ranei.

Me kï reira e te pūtau io e taea whakahaere ponana tino i roto i te kotahi aronga.

Karere kikokiko e toru ngā momo o ngā pūtau io:

1.Afferentnye - hua he pini whakatupuranga.

2.Effektornye - kia kaha ai mana kikokiko ki te tango i mahi. Ēnei ngā neurons nekeneke me ngā pūtau neurosecretory (whai wāhi i roto i te tukanga houtanga).

3. herekore - puka hononga i waenganui i ngā pūtau io.

muka io tohu karapotia tukanga neurons lemmotsitami. He unmyelinated me myelinated ratou. Runga anō i to ratou hanganga, e whakaurua ratou i roto i te hanganga o te wahi o te pūnaha io.

muka io whakamutu whakaaro motuhake, mutunga karere i huaina ki a ratou hono mā papanga muka ki ngā āhuatanga. Ko te mutunga o te rua momo: affectors me synapses. kawea te excitation tuatahi kei te roto i runga i te papanga muka, te tuarua, i runga i te anga ke, te muka ki te papanga.

Ano, te kiko io he glia, e ko, he rōpū o ngā pūtau e kua kitea i waenganui i neurons. Ēnei pūtau mahi mahi pērā i paruru, secretory, rohe, me te tautoko arataukai. E whai wāhi ratou i roto i te whakahaere i te excitation o te muka i roto i to ratou whanautanga houtanga me te e hōloa.

Ko te kupu, whakaaro te mahi o te kiko manavasii, ko te whai ake: production me āriponga o tohu hiko, waipara, me te rokiroki i roto i te mahara o etahi mōhiohio, te whai wāhitanga i roto i te hanganga o te whanonga, whakaaro, me te kare.

Ko te kupu, HT ko he tino motuhake ahua o papanga, arā, o ngā pūtau, weu kūmuri me glia. Ko te pūtau ahu ki te mohio ki ritenga fiefia, te whakaputa etahi ngātere, a ka tuku ia ratou. Nā ki wāhi tenei kikokiko i roto i te tuitui, te faatanoraa ohipa, urutaunga o whēkau katoa, ngā pūnaha, me te kopa o te tinana tangata.

Me kï hoki, ina kua te mate te kiko manavasii, mamae nga mea timatanga katoa e kua whakaurua i roto i tona hanganga. I roto i tenei take, i reira kia kia tukanga pathological, hei tauira, mumura, puku ranei ētahi atu hē e taea pā i te pūnaha io. Huri mate o matū i roto i te NT ranei e utua e te tupu o te kiko tūhonohono ranei te whanaketanga o cysts.

Me kï reira e te pūnaha io rite te katoa titoa te o kiko karere, a roto i nei ki te mahi i ngā tukanga katoa i roto i te tinana tangata.