Quotes About Capillaries

The perspiring of drops of blood is a known, but rare medical condition called hematidrosis. It is thought to be caused by intense anxiety when our body's fight-or-flight mechanism narrows the capillaries to prepare us for actions in the face of fear. If the fear is suddenly relieved, the capillaries dilate and, in some cases, rupture, leaving blood entering the sweat glands. It might actually be a sign of a very rapid relief from anxiety.1

The presence of proteins in the plasma makes the osmotic pressure of the blood higher than that of the interstitial fluid. This osmotic gradient tends to pull water from the interstitial fluid into the capillaries and offset filtration out of the capillaries created by blood pressure

All the seriousness of his plans depends on a steady flow of blood to his brain through vulnerable network of capillaries.

All vertebrates except mammals have nuclei in their red blood cells.In mammals, these cells go through an extra stage of development in which the nucleus is discarded. The resulting cells are smaller, can flow through smaller capillaries, can be packed with more hemoglobin, and thus can carry oxygen and carbon dioxide more efficiently.

For one thing, part of the process is not even neural; that is, it does not involve regular nervous firing along chains of neurons. The process is humoral: chemical signals traveling in the blood capillaries bathe certain regions of the nervous system that are devoid of blood-brain barrier and can thus inform those brain regions directly about aspects of the ongoing homeostatic state.17

The city was hers, as, made up and sleeked so with the customary words and images (cosmopolitan, culture, cable cars) it had not been before: she had safe-passage tonight to its far blood's branchings, be they capillaries too small for more than peering into, or vessels mashed together in shameless municipal hickeys, out on the skin for all but tourists to see. Nothing of the night's could touch her; nothing did.

Before exploring other critical implications of the subtleties at the interface between capillaries and cells, such as how they influence your growth, aging, and subsequent death, I want to briefly return to the issue of Godzilla.

Blood vessels, from aorta to capillaries, form another kind of continuum. They branch and divide and branch again until they become so narrow that blood cells are forced to slide through single file. The nature of their branching is fractal.

I found it possible to observe at least the superficial capillaries of muscles both in the frog and in mammals through a binocular microscope, using strong reflected light as a source of illumination. Resting muscles observed in this way are usually quite pale, and the microscope reveals only a few capillaries at fairly regular intervals.

Lying caused a physiological reaction that cut the flow of blood to the capillaries located at the end of the nose. It caused a tingling feeling that usually made the liar rub at the spot.

Since muscular contractions are usually more or less regularly alternated with relaxations, the system of valves makes of the veins of every muscle a very effective pump, capable of maintaining a low pressure in the muscle capillaries.

the blood in fall and winter is thick, low, and slow. Thick blood slows down and remains deeper in the body. It cannot flow through the small capillaries as efficiently, so the extremities are colder.

The highly stimulating and heating properties of Cayenne Pepper rouse the circulation, move the blood to the surface, and engorge the capillaries.