心血管活動的體液調(diào)節(jié)-wenkub.com
2025-01-17 05:34 本頁面
【正文】 Influencing factor 影響因素 1． Vasopressin （ ADH) 血管升壓素 (抗利尿激素 ） 循環(huán)血量 ↓ →ADH釋放 ↑ → 腎集合管重吸收 ↑ →細胞外液量 ↑ →BP↑ 2． RAAS系統(tǒng) 血管收縮 ， BP ↑ AII 醛固酮 → 保鈉排鉀 → 水重吸收 ↑→ 細胞外液 ↑ → BP ↑ In summarize， the regulation of BP is an intricate process which relates to many neural regulation is quick and shortterm which is carried out through the regulation of the diameter of resistance vessels and cardiac the long term regulation of BP is mainly undertaken through the regulation of kidney to the circulation blood volume. 總之，血壓的調(diào)節(jié)是一個復雜的、多種機制參與的過程。 Renalbody fluid control system 腎 體液控制系統(tǒng) (RAAS) The long term regulation of blood pressure is carrying out through the kidney to regulate the extracellular fluid volume, which is called Renalbody fluid control system . 動脈血壓的長期調(diào)節(jié)是通過腎臟調(diào)節(jié)細胞外液量來 實現(xiàn)的。 2. Blood flow autoregulation 血流量的自身調(diào)節(jié) When the an perfusion pressure changes, the arteriole resistance also change to keep the an blood flow at a constant level, which is called the autoregulation of the blood flow. 當器官灌注壓發(fā)生變化時，該器官的微動脈阻力也發(fā)生改變，使器官的血流量保持相對恒定的現(xiàn)象稱為血流量的自身調(diào)節(jié)。 1. Active hyperemia 主動充血 The phenomenon of the increase in the blood flow in most ans and tissues when their metabolism activity strengthen is called active is caused by the relaxation of arterioles as a result of the activity of ans and tissues strengthen. 大多數(shù)器官和組織代謝活動增強時表現(xiàn)為血流量增加，稱為主動充血。 ? To inhibit the secretion of ADH . 抑制血管升壓素的釋放。 (2) Endotheliumderived vasoconstrictor substances 血管內(nèi)皮生成的縮血管物質(zhì) 5. Atrial natriuretic peptide (ANP) 心房鈉尿肽 (ANP) Synthesis position:atrial muscle cell (28 peptides) 合成部位：心房肌細胞， 28肽 Target an: heart, blood vessels, kidney, CNS 靶器官：心臟，血管，腎臟，中樞 The blood volume increases, the atrium wall st
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