Musana

The musana mumwe mapoka ari CNS (nechepakati tsinga), unobva muviri kune kwokunze zvakatipoteredza uye kudzora mabasa ayo. Zviri nemhaka nechepakati tsinga, uye siyana dzomuviri uye nehurongwa vari vakabvumirana pakupindura kuchinja kuitika zvakatipoteredza.

uropi kutaura miviri uye mapazi nokushandisa musana. It anoita introducer uye dzepanguva mabasa.

Sei uye kupi musana

The nemamiriro CNS dhipatimendi iri nyore kunzwisisa. The musana chakaumbwa wachena uye chena nyaya. White nyaya - hwakaoma kunzwisisa tsinga fibers (myelinated uye unmyelinated), tsinga uye ropa midziyo yakambotongwa takapoteredzwa connective tishu. Gray Basa vanoumba tsinga sero miviri pamwe pezvakaitwa kuti vasina myelin mumuhara. Maererano pakati musana akapfuura mugero iyo izere cerebrospinal mvura. With zvomukati uye makumbo ayo kuyeuka akawanda tsinga, ayo kuburikidza zvakakodzera goho maitikiro inozivikanwa.

musana rinosvika wakafara makubhiti akura rimwe nehafu masendimita pakureba -. 45 masendimita Its avhareji kurema ndiwo '35

Ndiyo musana rwonzi murume ari mukati nzvimbo yacho musana mugero. Nechokunze, zvinoita sokunge netambo refu ine mapazi akawanda. Yokumusoro kuguma kwayo hakuna yakapinza muganhu chokuita chete medulla oblongata muna I remuromo vertebra, pasi riri pamwero I-II pamusoro lumbar vertebrae. Achipinda magumo (musana) shinda. Upper magumo zvikamu neshinda vari zvimedu Neural rinenge asi zvimwewo zviri akwirwe inotungamirwa. Rakapinza kuti reDhura munyika sacral canal, musana shinda kuda panguva nemagumo.

Kune membranes matatu yakapoteredza musana. mumuhara Rwomumwoyo - nyoro (vascular) Average - arachnoid dzokunze - chikukutu. Kubva mahamvuropu pfupa Canal vari nemarunda kuti tirambe musana akamiswa. Nzvimbo yaiva pakati yomukati uye pakati sheaths anozadza cerebrospinal mvura.

Saka mhango pakati musana Canal apo musana riri, uzere nuna rinenge cerebrospinal fluid pfungwa membranes nemidziyo ropa.

Longitudinal grooves vagovane musana kurudyi uye akasiya zvakafanana, ichibata sezvikamu.

Munguva musana Canal chinhambwe ndivo etsinga midzi. Vachibva neimwe hafu, achiumba longitudinal misara miviri. Ivo kusiya vertebral Canal kuburikidza makomba foraminarnye. The musana iri dzinoratidzwa raidudzwa segmental. Zvikamu vanotaura kuuropi, izvo kusiya musana Canal tsinga zvinobva kwavari. Mumwe chidimbu innervates imwe nzvimbo dzemuviri.

Pane zvikamu mashanu musana. Neck chikamu Anoumba sere zvikamu rumbabvu - gumi zvikamu, lumbar - shanu sacral - uyewo shanu coccygeal - 1-3 chidimbu. Zvikamu zviri remuromo innervate maoko uye mutsipa, thoracal zvikamu - chipfuva uye dumbu, lumbar uye sacral - makumbo, pelvic nhengo uye perineum. Tsinga midzi pakukoka pazasi ufanane musana harinzwi innervate rezasi hafu muviri kusanganisira pelvic zvomukati.

Kukanganisika nehanya kana injini kushanda imwe nzvimbo mumuviri anogona kuratidza mugove musana, izvo zvinogona kukuvadza.

On peripheral tsinga kubva musana kuti tsinga nomunhu vakapiwa nhengo dzomuviri. Ivo waidzora mashandiro zvomukati zvose. Kutsinga dzinouya tsinga fibers nekufambisa mashoko kubva munyama uye nhengo kune musana uye CNS.