Musana: STRUCTURAL features, marudzi uye mabasa

The musana ndiyo chikamu nechepakati tsinga. In mumuviri womunhu ndiye anokonzera injini hunenge uye kupararira tsinga nomunhu pakati mapazi uye uropi. musana kuifukidza, kuvapa dziviriro. Ndezvipi zvinhu uye kusiyana vane?

mamiriro

vertebral Maberere dzinoumba mhango, yainzi vertebral canal, uye imomo ari musana pamwe nemidziyo uye tsinga midzi. Its yokumusoro chikamu zvakabatana kuti medulla (musoro chikamu), uye nechepasi - pamwe periosteum coccygeal vertebra wechipiri.

Musana sokunge nhete chena mutsetse, wakareba munhu rinosvika 40-45 masendimita, uye pakukora kunowedzera kubva pasi kumusoro. pamusoro wayo zvishoma concave. Inoitwa zvikamu makumi matatu mumwe izvo dziri mbiri tsinga midzi.

The musana wakafukidzwa anoshongwa panze. Inside rine musoro uye chena nyaya, reshiyo yavo zvichisiyana munzvimbo dzakasiyana-siyana. The pfumbu nyaya ane chimiro shavishavi, pane tsinga muchitokisi miviri uye pezvakaitwa yavo unotora munhu chena yakasimba, iyo yakaronga panguva kumicheto.

Muzinda mugero iri pfumbu nyaya. It anozadza cerebrospinal mvura (CSF), iro ichi- rinoparadzirwa muuropi uye musana. In vakuru, zviri bhuku 270 milliliters. CSF anogadzirwa ventricles uropi uye yoku- 4 kanomwe pazuva.

musana

Three goko: zvakaoma, arachnoid uye munyoro - kufukidza zvose musoro uye kuti musana. Yavanobata huru mbiri mabasa. Protective chinonditadzisa inokanganisa pamusoro zvokuimba chiito pamusoro uropi. Trophic basa rine chokuita mutemo ropa aibuda chepfungwa, nemhaka iyo rinoitwa muviri ari munyama.

musana akaumbwa connective tishu masero. Panze pane goko rakaomarara, pasi arachnoid uye munyoro. Havana yakabatana mumwe zvakasimba. It ane subdural uye pakati ari subarachnoid nzvimbo. Kuti musana ivo batanidza matete nemarunda, izvo kurambidza elongation wouropi.

Shell vari akaumba pakutanga romwedzi fetus wechipiri. The connective zvinyama achiumbwa munyika Neural chubhu uye vakagovera pamwe nayo. Papera rinenge masero vakatsaurwa kuumbika wokunze uye yomukati nevamwe. Pashure pechinguva romukati goko rakakamurwa nyoro uye arachnoid.

zvakaoma deko

Chokunze goko rine zvakaoma pamusoro uye pasi akaturikidzana. It ane ine pasi iro unongoda munhu muzvizhinji kuti mumidziyo. Kusiyana yakafanana goko muuropi, hazvina abut zvakasimba pamusoro pamasvingo vertebral Canal uye vakaparadzaniswa pavo venous plexus, mafuta tishu.

The zvakaoma goko pamusoro musana riri fibrous gobvu tishu penya. It chinovafukidza uropi muchimiro ane elongated cylindrical chimiro pahombodo. Kuvanza masero (endothelium) vanoumba yakaderera cladding rukoko.

It encapsulates nodes uye tsinga, pova mhango iyo chokuwedzera, pedyo intervertebral foramen. Pedyo musoro goko zvakabatana kune occipital pfupa. Nhete pasi uye nhete tambo, izvo vasiyana coccyx.

Ropa ichipfuura ari arteries kusvika goko kwakabatana kune thoracal uye abdominal yeropa. Venous ropa anopinda venous plexus. The goko ndee mune musana Canal achishandisa pezvakaitwa ari intervertebral foramen uye fibrous tufts.

arachnoid

Slot-zvakaumbwa nzvimbo ine vakawanda unobatanidza matanda yakasimba anotsaura uye arachnoid Kamudzira pamusoro musana. Yokupedzisira ine chimiro nhete jira, zviri pachena uye rine fibroblasts (connective zvinyama fibers kuti synthesize ari extracellular chizvaro).

Arachnoid Kamudzira of musana akaputirwa glia - masero kuti anopa nokupfuuridzirwa etsinga nomunhu. Rine hapana midziyo ropa. Kubva arachnoid achizviparadzanisa pezvakaitwa, filamentous trabeculae, kugadzira zvinotevera nyoro nevamwe.

Under pechifukidziro chiri subarachnoid nzvimbo. Inside rine cerebrospinal mvura. It rakatsaurirwa muna yepazasi chikamu musana, muna sacrum uye coccyx. In mutsipa nharaunda iri pakati kanganisa uye akapfava arachnoid membranes. Septum uye giya kubatana pakati uropi tsinga midzi wakaiswa imwe nzvimbo, nokusarega iye kufamba.

nyoro deko

goko Rwomumwoyo dzamutswa. It yakafukidzwa musana. Tichienzanisa yakafanana chivakwa muuropi, riri kuonekwa Kunogara uye gobvu. Soft goko of musana chinosanganisira unzenza zvinyama, yakanga akafukidzwa masero endothelial.

Rine dzakaonda maviri akaturikidzana pakati izvo pane midziyo dzakawanda ropa. Pamusoro layer Illustrated bwendefa kana jira vari dentate nemarunda kuti zvigadzirise goko. To yomukati chikamu pedyo Kamudzira masero glial kwakabatana zvakananga musana. The goko unoumba munhu mumuhara kuti tsinga uye pamwe panoparadzana mwoyo kupinda uropi uye pfumbu nyaya.

Soft goko aripo chete mhuka. Other pano vertebrates (tetrapods) vane chete mbiri - yakasimba uye dzakawanda. Nokufamba shanduka kukura chomukati goko iri mhuka yakakamurwa padandemutande uye munyoro.

mhedziso

The musana zvinoenda epfungwa pamusoro vertebrates, kusanganisira vanhu. It anoita kushanda dzepanguva uye introducer. Wokutanga muzvidimbu hunenge anokonzera - .. Of flexion uye uyewo flick, etc. Zvaiitwa yechipiri iri conduction tsinga nomunhu pakati mapazi uye uropi.

Solid, arachnoid uye munyoro goko yakafukidzwa musana kubva kunze. Ivo vanoita wokudzivirira uye trophic (muviri) ushande. Anoshongwa akaumba connective tishu masero. Ivo dzakaparadzaniswa dzezvimwe pakati pavo izvo vakazadzwa doro - mvura achiparadzira ari musana uye pfungwa. A casing kwakabatana pakati zvakanaka fibers uye muitiro.