Now ischemia is lack of blood flow to tissue or lack of oxygen.

现在缺血是组织血流不足或缺氧。

Osteonecrosis, the collapse of bones due to the decrease of blood flow to bone cells.

骨坏死，由于流向骨细胞的血流量减少而导致的骨骼塌陷。

Lack of blood flow through the arteries to certain portions of the heart muscle result in the death of that muscle.

由于心肌某些位置的动脉供血不足导致了心肌的死亡。

STEMI results from a complete and persistent occlusion of blood flow.

STEMI 是由于血流完全和持续阻塞所致。

So let's look at how this all comes together, starting with a big burst of blood flowing out of your heart.

让我们来看看这一切是如何结合在一起的，从你心脏流出一大注血开始。

These are caused by the pressure on the skin that limits the amount of blood flow to the skin and nearby tissues.

褥疮是由皮肤上的压力引起的，因为它限制了流向皮肤和附近组织的血量。

The result is a redirection of blood flow from heart muscle supplied by the blocked artery, to other regions of the heart.

这会导致由被阻塞冠脉供血的心肌的血流，转向流入心脏的另一片区域。

Alcott died on March sixth, 1888, from a stroke, from an interruption of blood flow into the brain.

奥尔科特于 1888 年 3 月 6 日死于中风，原因是流入大脑的血液中断。

During the race, their guts got leaky—due to a lack of blood flow to the intestines, and the physical trauma from so many jarring miles.

在比赛过程中，由于缺乏流向肠道的血液及剧烈运动造成的物理损伤，一些运动员的内脏出现漏隙。

Aortic stenosis murmur is loudest in the aortic area and the sound radiates to the carotid arteries in the neck following the direction of blood flow.

主动脉瓣狭窄杂音在主动脉区域声音最大，杂音随着血流的方向放射至颈部的颈动脉。

But even then, it took another hundred years for an accurate description of blood flow to emerge, and two hundred more for the theory of the Four Humours to fade.

但即便如此，还是再等了一百年的时间才出现对血流的正确描述，再经过两百多年，四体液学说才慢慢消失。

When we talk about blood flow, what we're talking about is the volume of blood flowing through any given vessel, or through the circulatory system as a whole, per minute.

当我们谈论血液流动时，我们谈论的是每分钟流过任何给定血管或整个循环系统的血液量。

Normally, after a cut and damage to the endothelium, or inner lining of blood vessel walls, there's an immediate vasoconstriction or narrowing of the blood vessel which limits the amount of blood flow.

正常情况下，血管壁内层的内皮细胞受到损伤后，血管会立刻收缩变窄，减少血流量。

Well, we know that blood pressure is the circulatory system's way of getting your five liters of blood flowing throughout your body, so that your tissues can get the oxygen and nutrients they need.

嗯，我们知道血压是循环系统让你的五升血液流经全身的方式，这样你的组织就可以得到它们需要的氧气和营养。

For instance, while you're awake, there's lots of blood flowing to the cerebral cortex, the thin layer that surrounds the largest part of your brain, which plays a role in making decisions and thinking creatively.

例如，当你醒着时，会有大量血液流向大脑皮层，大脑皮层是包裹大脑最大部分的薄薄的一层物质，它在做决策和创造性思维方面起着重要作用。

Normally, the process starts with damage to the endothelium, or inner lining of blood vessel walls, after which there's an immediate vasoconstriction or narrowing of the blood vessel which limits the amount of blood flow.

通常，这一过程开始于血管内皮损伤，之后立即发生血管收缩，或者说通过收缩血管来限制血流量。

If pressure increases to a point where the right side's more than the left side, then the direction of blood flow through the VSD can switch from being left-to-right to right-to-left, a condition known as Eisenmenger syndrome.

如果压力一直上升到心脏右侧比左侧还高，那么VSD的血流方向就会从左向右切换到右向左，这种疾病被称为艾森曼格综合症。

She bit her lips, and a rush of blood flowing under her skin made her red from the roots of her hair to the top of her collar. She remained standing, leaning with her shoulder against the wainscot.

她咬咬嘴唇，血像潮水似的往上涌。 她脸红了，从头发根部到衣领边上，皮肤都变成了玫瑰色的。 她站着不动，肩膀靠住护壁板。