Sassa na kwakwalwa. Medulla oblongata. A tsarin, aiki, sakamakon shan kashi

Haushi kwakwalwa anatomically wakilta farantin m al'amari rufi da m rabo daga cerebral hemispheres. Its Musulunci tsarin saboda da manyan yawan convolutions rabu da furrows. Kamar wancan ne mafi na ɓawon burodi located a kwarin kunya zurfi, da kuma wani karami part - a kan su surface. A bambanci yammancin duniya convex (m) da kuma wani ciki surface, da kuma wani tushe. A cikin matsanancin surface na parietal lobe ne rabu da frontal yin amfani da iko "rolandovoy" kwarin kunya. Kasa shi ne "Sylvius" tsagi, da abin da na boko lobe ne rabu da frontal da parietal. Parietal-occipital sulcus rarrabe occipital lobe.

Microscopic bawo tsarin hada da wani jerin salon salula da kuma fibrous yadudduka, da kuma dangantaka da wani shida-Layer tsarin irin.

A lokacin da wannan aka ƙaddara da wadannan yadudduka:

- external granular.

- ciki granular.

- kwayoyin.

- polymorphic Kwayoyin.

- manyan pyramidal Kwayoyin.

- matsakaici da kuma kananan pyramidal Kwayoyin.

Tsari da kuma medulla aiki, sakamakon ta hallaka

Its tsawon ne game da ashirin da takwas millimeters, wani nisa hankali na karuwa ne, kai da ashirin da hudu millimeters. Medulla ci gaba a cikin girman kwanyar rami laka via da tsakiyar kashin baya canal. An lura da kasancewar wani abu daban gungu na launin toka al'amarin, wanda ya samar da da zuciyar girman kwanyar jijiyoyi. A samuwar farin al'amarin da hannu fiber tafarkin. Medulla oblongata ƙunshi tsakiya, daga abin da tushen suna located muhimmanci girman kwanyar jijiya (vagus, hypoglossal, glossopharyngeal, tsawo). Bugu da kari, da nuclei da hannu a cikin reflex tafiyar matakai kamar taban da ake, hadiya, tsotsa, sneezing, amai da kuma rabuwa na narkewa kamar ruwan 'ya'yan itace. Samuwar nuclei a cikin mutane ya auku a lokacin ci gaba a cikin mahaifa. Oblong jariri kwakwalwa (tare da wata gada), Tã yi game da takwas grams. Maturation yana da matsakaita na shekara bakwai.

By wucewa ta cikin medulla oblongata hanyoyi gudanar da centripetal kuma centrifugal hasken dake fitowa. Daya daga cikin mafi muhimmanci hanyoyi ne dauke da pyramidal hanya. Yana haɗu da mota a cikin yankunan da cerebral bawo da mota sel da agara zankayen laka. A kan iyakar da laka da kuma medulla sashen lura tsallaka zuwa cikin pyramidal fili. Wannan bayyana aikin rushewa daga wasu sassa na kwakwalwa a lokacin da suke lalace. Alal misali, raunuka a pyramidal katako sama chiasm sa hemiplegia a kan kishiyar sashi na jam'iyya jiki. A daidai wannan lokaci da shan kashi na girman kwanyar jijiyoyi aikin disturbances faruwa a wannan sashi na jiki.

"Cerebellopontine kwana" aikin wani a haɗa aiki. Located in na baya fossa kwanyar, shi ne maha? Ar da gada, cerebellum da medulla oblongata. A taron na marurai a wannan wuri suna guga man na gaba sassan na wadannan sassan.

A medulla oblongata suna located mafi muhimmanci rai goyon bayan cibiyoyin, wanda dora musamman muhimmancin wannan sashen a tsakiya m tsarin. A nan ne zuciya da jijiyoyin jini da kuma na numfashi cibiyoyin. Wannan shi ne dalilin da ya sa lalacewa (ko da qananan), da kuma musamman da kau da medulla oblongata take kaiwa zuwa mutuwa saboda numfashi kama da karewa na ayyuka na zuciya da jijiyoyin jini tsarin.

Lalacewar da pyramidal fili iya haifar da daban-daban sakamakon. A duk ya dogara da girman da rauni da kuma lokacin da ya wuce tun bayan da kafuwar. A lokuta da dama, wadannan raunuka sa wani mutum mai tsanani inna a daya ko biyu makonni.