Shell mwoyo. Sechivako mwoyo yevanhu

Heart - huru ropa Kusasvika nhengo maitiro uye node inotungamirwa mumuviri. Ngachipiwe muchimiro hombe mhasuru wandei mhango makamuri. Nokuda nemano avo kubata, zvichiguma kufamba kweropa. Pamwe pane vatatu goko moyo; epicardium, endocardium uye myocardium. The chivako, chinangwa uye kushanda neimwe funga izvi zvinhu.

Sechivako mwoyo womunhu - anatomi

Cardiac tsandanyama ine 4 makamuri - 2 atria uye ventricles 2. Kuruboshwe ventricle uye akasiya atrium wezvamatongerwe inonzi arterial chikamu nhengo, zvichienderana hunhu ropa iri pano. Mukupesana, rworudyi ventricle uye yakarurama atrium vanoumba venous divi mwoyo.

muviri ropa rinomiririrwa ari muchimiro flattened cone. Zvakanga yoga chawo, pamusoro, uye pasi Anterior pamusoro, uye vaviri mupendero - rworuboshwe uye zvakarurama. Pamusoro mwoyo une woita chimiro uye integrally inoumbwa ventricle kuruboshwe. Mujinga nharaunda yaiva atrium, uye mugove wayo mberi nhema yeropa uye pulmonary hunde.

kukura mwoyo

Zvinofungidzirwa kuti munhu mukuru, akaumba munhu munhu kukura pomwoyo wakaenzana Ukuru vakarumanisa chibhakera. Kutaura zvazviri, avhareji muviri kureba munhu akura ari 12-13 cm. The dhayamita pamusoro 9-11 masendimita akaenzana mwoyo.

hono mwoyo guru - vakadzi vanenge 300 vane mwoyo anoyera avhareji vanenge 220 magiramu

Chokutambudzika mwoyo

Several vakasiyana vakaparadzana maitikiro pomwoyo:

1. Pakutanga pane rutapudzo pamusoro atria. Zvadaro, vamwe deceleration rinotanga marwadzo ose ventricles. Panguva iyi ropa riyerere anongonzwa uderedze vazadze kamuri shoma kuvafurira. Seiko kwete kuzvishandura mvura yacho iri atrium? Chokwadi chokuti ropa waylaid mudumbu mavharuvhu. Naizvozvo, chete rinogona kufamba nenzira yeropa uye pulmonary nemidziyo.
2. Chechipiri danho - kutandara of ventricles uye atria. The muitiro kunoratidzwa pfupi-izwi kuderera tsandanyama matauriro hurongwa umo pamakamuri awa aumba. The kwacho kunokonzera vasanyanye nevezera ari ventricles. Saka, ropa anotanga kufamba negwara risiri. Zvisinei, izvi kudziviswa nokuvhara pulmonary uye kutsemuka vharafu. Panguva yokuzorora of ventricles kuzadza neropa, izvo zvinobva atria. Mukupesana, ivo atria azara muviri Urume hombe uye duku denderedzwa ropa kutenderera.

Chii anokonzera kushanda mwoyo?

Sezvo chikazozikamwa, kushanda pomwoyo hakusi zvemasanga chiito. Muviri anoramba kushingaira dzose, kunyange apo munhu ari ezvinhu nehope. Kunenge kuti kune vanhu vari kuteerera mwoyo wako mwero panguva basa. Asi ichi zvinoitwa chaiyo yakarongeka, midzi mumwoyo tsandanyama pachayo - biologic kupomba urwu hurongwa. Zvinokosha kuziva kuti paumbwe vakati mashandiro achiri rikaitika vhiki intrauterine fetus mavambo wokutanga. Zvadaro, kurova kwemwoyo urwu hurongwa haibvumiri mwoyo kumisa pamusoro hwose.

Interesting zvinhu pamusoro basa mwoyo

Munguva quiescent mamiriro nhamba sunga kwomwoyo tsandanyama panguva miniti anenge 70 anorova. Muawa imwe nhamba rinosvika 4200 zvibhakera. Tichifunga kuti panguva imwe mwoyo marwadzo ejects munzvimbo kweropa hurongwa 70 ml emura, zviri nyore kufungidzira kuti kweawa ichipfuura kuti 300 litres ropa. Sei muviri ichi pumps ropa ari muupenyu? Nhamba iyi ndiyo avhareji mamiriyoni 175 litres. Hazvishamisi kuti mwoyo anonzi yakanaka injini, izvo chaizvo hapashayikwi.

lining mwoyo

Total kure 3 yoga goko cardiac mhasuro:

1. Endocardium - yomukati Kamudzira mwoyo.
2. Myocardium - womukati tsandanyama yakaoma vakaumba paukobvu filamentary fibers.
3. Epicardium - dzakaonda rokunze goko mwoyo.
4. Pericardium - ebetsero cardiac mumuhara kuti rudzi hombodo, iro rine mwoyo yose.

Next, ngatimbotaura pamusoro apa rukoko mumwoyo kuitira, tarisa yakaitwa kwavo.

myocardium

Myocardium - mnogotkanevaya tsandanyama rukoko mwoyo, izvo kuumbwa striated fibers anongoremberera connective zvivako, Neural urongwa, uyewo akakura richikurukura capillaries. Heano P-masero kuti vanoumba tsinga nomunhu uye akatakura. Uyezve, pane masero myocardium myocytes uye cardiomyocytes, izvo basa mukuderedza muviri ropa.

The myocardium rinoumbwa anoverengeka akaturikidzana: yomukati, pakati dzokunze. The womukati mamiriro rinoumbwa tsandanyama mwanda kuti akaronga longitudinally noruremekedzo kune mumwe. Chokunze paiva tsandanyama mwanda vanosarudzirwa obliquely. Recent vawedzere zvikuru chakaderedzwa mutengo nomwoyo, izvo vanoumba anonzi curl they. The pakati rukoko rine dzeraundi makavharidzira tsandanyama mwanda, mumwe vakaparadzana mwoyo ventricles.

epicardium

Akauya goko kwomwoyo tsandanyama risina mvere chaizvo, dzakaonda uye yakati segirazi marongerwo. Epicardium anoumba rokunze zvinyama ari nhengo. Kutaura zvazviri, goko anoita sechinhu rukoko yomukati pamusoro pericardium - vanonzi mwoyo pahombodo.

Epicardial pamusoro rakaumbwa masero mesothelial, iro riri pasi panaakabatanidzwa pamwechete, kusazvibata mamiriro yaimirira unobatanidza fibers. Panguva chakaderedzwa mutengo mwoyo uye mihoronga yayo, vaiona goko zvinosanganisira mafuta tishu. Epicardium merges pamwe myocardium munzvimbo zvinenge accumulations masero mafuta.

endocardium

Kuramba pamwe Kamudzira kwemoyo, ngatimbotaura pamusoro endocardium. The akauya mamiriro aumbwa kwakavharwa nenyama fibers kuti akaumbwa kumeso tsandanyama masero uye connective. Endocardial zvinyama lining ose nechomukati Makamuri mwoyo. On pakukoka kubva nhengo ropa zvinhu: yeropa, pulmonary tsinga, pulmonary hunde endocardial rinenge anobuda zvakanaka pasina akasiyana miganhu. In sendarama zvikamu atrial endocardium fused pamwe epicardium.

pericardium

Pericardium - chokunze mucous Kamudzira mwoyo, anozivikanwawo sokuti pericardium. Chivako ichi anomirirwa ari muchimiro truncated cône padivi. Lower garo pericardium anoiswa pamusoro diaphragm. To pamusoro goko anoenda pamusoro kurutivi rworuboshwe pane kurudyi. mhando iyi wehomwe haisi chete runopoteredza mwoyo tsandanyama, asiwo yeropa, muromo pulmonary hunde uye pedyo mutsinga.

The pericardium achiumbwa kubva kwevanhu vanhu vari tanga fetus. Izvi kunoitika anenge 3-4 mavhiki pashure paumbwe embryo. Kuvadza nemamiriro goko, ayo kukwana kana zvakakwana kusavapo kazhinji kunotungamirira vachiberekwa mwoyo chirwere.

In mhedziso

In yedu pasi zvaionekwa nemamiriro mwoyo yevanhu, anatomi edzimba dzake uye membranes. Sezvaunogona kuona, mwoyo tsandanyama ane chaizvo kunzwisisa chivakwa. Zvinoshamisa, pasinei kwayo oma yakarongeka, muviri uyu unoshanda dzichimhanya hwose, achipa kukundikana chete pana zvakakomba pathologies.