Purkinje likhoele ka pelong

pelo tsa rona - ka mesifa hore e na le mochine buka e ikhethang haholo la honyele. Ka hare ho tsamaiso e rarahaneng ea lisele e itseng (swallow), e leng e na le selotlolo boemong ba oona tsamaisong tshebetso taolo. Ho palo ea ditshwaelo le likhoele Purkinje. Ba ba sebakeng myocardium le ventricular le ke le boikarabelo ba ho khutsufatso bona synchronous.

Kakaretso kaheho ea tsamaiso ea vascular

Cardiac conduction tsamaiso e khopo e conventionally arotsoe ka likarolo tse 'nè ke anatomists. Karolo ea pele e fana ka noute sinoatrial (sinoatrial). Ke motsoako oa mangata a mararo ea lisele tseo hlahisa linaoa le maqhubu a ea mashome a robeli - makhetlo a lekholo le mashome a mabeli ka motsotso. lebelo Sena se nolofalletsa ho otla ha pelo ho boloka lekaneng ajoa mali 'meleng, ho tlala le oksijene le sekhahla tshilong ya dijo.

Haeba ka lebaka le itseng sethusapelo pele ka ke a etsa mosebetsi oa eona, ho nka ho atrioventricular noute (atrioventricular). Ho e teng moeling oa likamoreng tse ka pelong ea ka dia bohareng. lesihla ena ea lisele ke sekhahla maqhubu a fapaneng ya lichapo tse mashome a tšeletseng ho mashome a robeli 'me e nkoa e le ea bobeli e le hore sethusapelo.

Boemo tlang ea tsamaiso conduction - e ke e sosobaneng la hae le Purkinje likhoele. Ba leng teng ka interventricular septum le entwine le tlhorong ea pelo. Sena se etsa hore ho ka khoneha ho ka potlako aba litakatso tsa motlakase tsa myocardium le ventricular. ho fehla motlakase lebelo fapana ho ea ka makhetlo a mashome a mane ho tse mashome a tšeletseng ka motsotso.

phepelo ea mali

Likarolo tse ling tsa tsamaiso ea conduction, tse teng atria e, fumana limatlafatsi mehloli thoko, thoko ho tswa ho ba bang kaofela ba myocardium. noute Sinoatrial fepa ke le 'ngoe kapa tse peli methapo tse nyenyane tse ka mabota teteaneng ea pelo. Feature ke ho ba teng ha ka mothapo disproportionately kgolo eo e ntse e feta ka noute bohareng. Sena lekala ea tokelo mothapo gogoga. O ile a, le eena, a fana e ngata makala e nyenyane e theha le letso marangrang a ea bohlokoa-venous sebakeng sena atrial dinama tse nyenyane tse.

Sosobaneng tsa Hae le Purkinje likhoele, hape, ba tsamaisoa ka makala a le tokelo gogoga mothapo (moshanyana) kapa ka kotloloho ho tswa ka boeona. Maemong a mang, mali a ka phalla ka sebopeho ho tloha mothapo ho circumflex. Ho boetse ho e theha le letso marangrang a methapong tse thata-thata entwine cardiomyocytes.

Lisele tsa mofuta oa pele

Phapang pakeng tsa lisele tse, e leng ke e le karolo ea tsamaiso ea conductive, ka lebaka la 'nete ea hore ba na le mesebetsi e fapaneng. Ho na le mefuta e meraro e ka sehloohong ea liseleng.

Isang swallow ba N lisele tse, kapa lisele tsa mofuta oa pele. Morphologically, ke lisele tse nyane mesifa le khubung kgolo le e ngata letlobo telele, lohellana. 'Maloa lisele tse haufi li nkoa e le lesihla le le momahaneng ka ho e ka tlaase lera tloaelehileng.

Ho hlahisa ka khutsufatso ka hare lisele tse mahareng P lokisetsa mangata a myofibrils. likarolo tsena lula bonyane kotara ea sebaka kakaretso ea cytoplasm ena. organelles tse ling ka lootho ratang ka hare ho sele le nyenyane ho feta ka cardiomyocytes tloaelehileng. A cytoskeleton tube,, lehlakoreng le leng, ba lokisetsa nang le ho boloka sebopeho sa swallow.

Liseleng tsena e na le Sino-atrial noute, empa thepa ea motheo e meng, ho akarelletsa le likhoele Purkinje (sobotta eo tla o ile a hlalosa mona ka tlase) ho ba le sebopeho sa tšoaneng.

Lisele tsa mofuta oa bobeli

Ba ne ba boetse ba bitsoa phetoho kapa swallow latent. Irregularly e bōpehileng joaloka, khutšoanyane ho feta cardiomyocytes tlwaelehileng, empa ho ba le tsona ka botenya e khōloanyane amohela e nuclei ba babeli, 'me ka mabota seleng e le na le boikhutso tebileng. Organelles liseleng tsena ho feta ka cytoplasm lisele tse n g.

The contractile thread atoloswa hammoho selekane telele ea sele. Ba motenya le ba le e ngata sarcomeres. Sena se nolofalletsa hore ba bakhanni ba sekhahla bobeli-taelo. Lisele tse di lokisetsa ya data atrioventricular noute le sosobaneng tsa Hae le Purkinje likhoele li-slide ka mofuta oa boraro ea lisele tse hlahisoang.

Lisele tsa mofuta oa boraro

Sobotta tsejoa mefuta e 'maloa ea lisele karolong e bolaeang ea tsamaiso ea cardiac conduction. Ho ea ka tlhophiso ea mofuta seleng ea boraro nkoa mona tla ba le mohaho o tšoanang le tse etsang Purkinje likhoele pelong. Ba voluminous fetang swallow a mang, nako e telele le bophara. Botenya fapana myofibrils ka dikarolo tsohle faeba, empa palo ea likarolo contractile o moholo ho ka cardiomyocytes tloaelehileng.

Hona joale re ka bapisa mofuta boraro ea lisele le batho tse etsang Purkinje likhoele. Sobotta (ho lokisetsa fumaneha lisele tsa tlhorong pelo) likarolo tsena e fapane haholo. Ea mantlha e na le sebopeho haholo likhutlo li 'nè,' me contractile faeba ntshetswa fokolang haholo, 'me na le makala a mangata a ya kokangana. Ho phaella moo, ha ba tsepamisa maikutlo ka ho hlaka ka bolelele ea sele le ba o ile a lokisetsa ka dikgao e telele. Scant chelete organelles tse lokisetsa ho pota myofibrils ena.

Ho se tšoane ka maqhubu a ya linaoa le generated le lebelo la ho phetha a bona, hloka e phylogenetically nts'etsoa kahamahanyo mochine nakong ea tshebetso ya ho fokotsa likarolong tsohle tsa pelo.

Histological se tšoane conduction tsamaiso ea cardiomyocytes

Lisele tsa mofuta bobeli le la boraro ho ba le chelete e khōloanyane ea glycogen le metabolites lona ho feta cardiomyocytes tloaelehileng. Tsobotsi ena e reretsoe ho fana ka polasetiki lekana ho koahela mosebetsi sele le ditlhoko phepo. enzyme ba ikarabellang bakeng sa glycolysis le glycogen tswakana, haholo ba sebetsa ka mafolofolo ho feta ka lisele tse ea tsamaiso conduction. Ka pelo ea ho sebetsa liseleng tse hlokomela mohlala bo fapaneng. Ka lebaka tšobotsi ena ho be bonolo ho fokotsa isa oksijene isoa swallow, ho akarelletsa le likhoele Purkinje. Oa ho lokisetsa tsamaiso khanna ka mora kalafo ea dintho lik'hemik'hale a sebetsang a bontša mosebetsi phahameng le holineserazoy le lysosomal enzyme.