Magazi

magazi - kuthamanga mu zotengera magazi. Popanda, sikutheka kumaliza kukhazikitsa njira kagayidwe kachakudya mu zimakhala thupi. Uyamiko kwa Iye, magazi akamayendetsa m'thupi.

magazi analenga mkati mtsempha wamagazi, capillary, motero - mu capillaries venous ndipo - mu mitsempha.

Komanso, pali kuthamanga osmotic magazi, izo zimatengera ndende salt mchere. Mtengo wake ambiri amakhalabe khola. Koma ngakhale kusintha kochepa angathe kuwononga maselo ofiira. Pakuti lamulo neurohumoral wa ku osmotic kuthamanga udindo zopangitsa thukuta ndi impso.

Ndipotu, kodi kwakukulu atero ndi wolumikizira magazi, zimakhudza:

- mphamvu ya contractions wa mumtima;

- kuchuluka kwa magazi ejected pa nthawi pamene aliyense kuchepetsa motsatizana;

- kulimbikira amene chotengera makoma (zotumphukira) kupereka magazi kusuntha otaya;

- chiwerengero cha heartbeats pa unit wa nthawi atsopano.

zinthu Secondary kumamukopa magazi - ndi chiwerengero ndi kukhuthala. Komanso, kusiyana kuthamanga mu zonse m'mimba ndi thoracic M'mimbamo, lomwe likutuluka chifukwa kayendedwe pa kupuma.

The pazipita magazi zimachitika pamene yafupika kumanzere ventricle (systole). Choncho ejected therefrom nthawi yomweyo 70 ml ya magazi. Kudzera capillaries ndi zina zotengera ang'ono ngati kuchuluka mwakamodzi sangakhoze kudutsa. The msempha, chifukwa elasticity ake, anatambasula, imodzi zikutipatsa ndi kuthamanga systolic magazi. Anthu (wathanzi) zaka zoposa 16, zikhoza osiyanasiyana monga 110 130 mamilimita Hg. Art.

Pa diastole - ndi chete kwa pakati contractions wa kumanzere ndi ventricles bwino - anatambasula mpanda wa mitsempha lalikulu ndi msempha anayamba ndi kuotcha. Choncho, iwo anakankhira mu capillaries magazi. Ndipo kukakamiza akutsikira pa mapeto a diastole mu msempha ndi adatchithisira 90 mamilimita Hg. Art, ndi lalikulu-kakulidwe mitsempha -. 70 mamilimita Hg. Art. Kusiyana systole ndi diastole amaona mwa munthu mu mawonekedwe a zimachitika munthu.

Kwakukulu mtunda kuchokera ziwiya magazi mtima, m'munsi kuthamanga m'menemo. Choyamba, chiwerengero chapamwamba limasonyeza systolic kuthamanga ndipo chachiwiri, m'munsi - chifukwa diastolic.

Mu mitsempha lalikulu ndi lalitali mu arterioles ang'onoang'ono. Mu kusintha kwa capillary bedi amachepetsa magazi, zambiri igwera mu mtsempha ndipo akafika ngakhale mfundo zoipa mu mitsempha dzenje.

Kuyeza ndi mwaukadaulo zovuta kwambiri mu mitsempha kapena capillaries. Choncho, n'kofunika kuthamanga yaweruzidwa pamaziko a mtima wake mu mitsempha ya.

Magwiridwe a zambiri zimadalira mmene munthu amakhala, chimene iye akuchita, lomwe lili ndi zinthu payekha. Ndi zaka, kuchuluka kwa kusintha kuthamanga. Ndipo kumawonjezera ndi kuchuluka maganizo, ntchito yamasewera. Pa nthawi yomweyo, mpikisanowo, anthu amene amangokhalira kugwira ntchito mwakhama thupi ndipo mwina ngakhale ndichepe.

Systolic magazi ana anatsimikiza ndi chilinganizo 80 + 2a, lomwe komanso - ichi ndi zaka (mu zaka).

The njira zimene zilipo mu thupi ndi kulamulira mlingo wa kuthamanga, kuwalola kubwerera mwakale pambuyo kusinthasintha zazing'ono chifukwa cha maganizo kapena ntchito yadzaoneni.

Ngati iwo osweka pali kusintha kulimbikira m'mwamba pake, kulankhula za matenda oopsa, kapena kunsi, ndiye izo zifika hypotension.

Ambiri, munthu aliyense amadziwa magazi awo mwakale. Ndipo kupatuka aliyense malangizo kapena chiyenera kukhala amapereka kwa kupita kwa dokotala chifukwa cha zifukwa zimene zimachititsa akonzedwa ichi chizindikiro. Mwachitsanzo, matenda a matenda, mtima, vuto la poizoni zambiri amapezeka hypotension. Ndipo ndi matenda a impso, endocrine chisokonezo - matenda oopsa.