Earth's respiratory and circulatory systems.

No breaking into your circulatory system.

like an X ray of the city's circulatory system unfolding.

In acorn worms, a heart and circulatory system evolved. And gill like structures.

And this entire process is kept moving... through the circulatory system... the center of which is... the heart.

Let's now keep going and talk about the second part of the circulatory system, which is the systemic circulation.

He had a bad leg, a circulatory problem, that made it very painful for him to walk the course.

The oceans are quite literally the circulatory system of life, and as such, whatever happens in the ocean, happens to us.

We're clogging the ocean, poisoning the planet's circulatory system, and we're taking out hundreds of millions of tons of wildlife, all carbon based units.

We can step back out again and then reorganize the data by cause of death, seeing that circulatory diseases and cancer are the usual suspects, but not for everyone.

I want to be clear, embolus is the general term for anything that can float around in your blood and eventually lodge itself at some point in your circulatory system and restrict blood flow.

If you take those networks, this idea of networks, and you apply universal principles, mathematizable, universal principles, all of these scalings and all of these constraints follow, including the description of the forest, the description of your circulatory system, the description within cells.