Laka: sifa da aiki

Kashin baya mutum kwakwalwa ne jiki ta muhimmanci ayyuka. Laka, tsarin da ayyuka na jiki sun dade da aka boye daga likitoci, saboda yanayin mafi kare shi daga waje tsoma. An ayi a kashin baya canal, 'yan mĩƙe. laka tsawon - har zuwa arba'in da biyar santimita, ta kauri - na game da daya santimita. Yana yana da wani tsagi cewa ya raba kwakwalwa cikin biyu halves. Ciki da laka yana da wani rami a cikinsa akwai cerebrospinal ruwa. A dangane da ayyuka yi an rufe tare da bawo - m, tsakiya da kuma can ciki. The m daina kai hare hare, da farko da hidima ga kare laka daga lalacewa da kuma sauran biyu dauke da jijiyoyi da jini.

Yana farawa daga laka na medulla na kwakwalwa, da kuma ƙare a cikin lumbar kashin baya. Bisa ga yawan vertebrae, ya ne zuwa kashi segments. Su ne a jikin mutum, akwai talatin da daya. Kowane sashi na tushen - biyu a gaban kuma biyu a baya. Anterior kashin baya ta haɗu da dorsal tushen samar da wata gauraye jijiya. Ya ƙunshi zaruruwa.

Laka, da tsarin, shi ne ban sha'awa karatu a wani jirgin saman. Idan ka yi la'akari da shi a cikin mahallin, ana iya gani a cikin cibiyar na tashar m al'amari, kama malam. Wannan tari na jijiya Kwayoyin. Yana kewaye da fari al'amari, da ke cikin conductive hanya, kuma sunã Haša igiyar segments tare. A conductive hanya za a iya raba iri biyu - hawa, wanda aka ruwaito zuwa kwakwalwa na zumudi sakonni da kuma downward - mãsu yin wani martani daga kwakwalwa zuwa ga gabobi.

Laka, tsarin da ayyuka na wanda aka ba su sani ba kafin yanzu an yi karatu, kuma ba wuya. da laka da aka raba su kashi biyu. Na farko shi ne reflex, da kuma na biyu - da introducer. Jigon da reflex aiki shi ne cewa shi accumulates aikin duk reflex arcs, game da shi, iko da kuma autonomic da somatic ayyuka. Wasu laka kashi activates fata, ko tsoka a matsayin firaministan misali ne motor reflexes. Alal misali, sama da tasiri fiye da wani gwiwa reflex auku a kaifi tsawo na patella. Bugu da kari, da laka da numfashinsa controls kamar sweating, pupillary dilation, da motsi na da diaphragm. data liyafar da kuma watsa ta laka ne staggering - da siginar da aka ruwaito a wani kudi na sittin to mutum ɗari da ashirin da mita da biyu (a daban-daban iri daban-daban zaruruwa). Wannan gudun zama dole domin mutum dauki ga samuwar kasashe da aka as azumi kamar yadda zai yiwu. Saboda haka, kwayoyin kare kanta. A sacral kashi ne ke da alhakin genitourinary tsarin - akwai wani hanji motsi iko cibiyar, urination, aikin yin jima'i.

Jigon da wayoyi aiki ne don gudanarwa hasken dake fitowa ta cikin kwakwalwa, sa'an nan kuma bayan da aiki na bayanai - baya ga sassa na jikin mutum.

Laka, tsarin da ayyuka na dalĩli ne sosai m zuwa waje tsoma. Duk da cewa da laka a amince tucked tafi daga lalacewa a cikin kashin baya kasũsuwa, ashe, har yanzu ya ji da tasiri daga waje. Saboda haka, ko da daga farkon shekarun da yaro ya kamata a saba dace dasa, isa motor aiki, wasan motsa jiki. Very mai tsanani laka rauni - su iya abada naƙasta wa mutum don matsar kusa, kuma da yawa wasu ayyuka. By nazarin laka, sifa da aiki, likitoci kawai marginally ci gaba ne cikin al'amura na fi. Kamar yadda mai mulkin, shi da ke sosai tsawon ba tare da wani cikakken maida ayyuka. Saboda haka yana da muhimmanci sosai ga kare lafiyar ka da kuma tuna cewa laka, tsarin da ayyukan da wannan jiki ne na musamman. Our aiki - don kare shi.