noun
definition
A narrow tube.
definition
Any of the small blood vessels that connect arteries to veins.
Examples of capillaries in a Sentence
The blood bypasses the capillaries and tissues and returns to the heart.
The swollen waxy capillaries are pressing on the columns of liver cells and are causing marked atrophy.
If pressure remains high, it can rupture capillaries and damage the circulatory system.
You may also experience reddening or flushing of your skin due to niacin's ability to dilate surface capillaries and bring blood to the regions below your skin surface.
The number of capillaries within your lungs will increase.
These vascular malformations of dilated capillaries appear in the upper and lower layers of the skin on the face, neck, arms, and legs.
Lymphatic vessels-Part of the lymphatic system, these vessels connect lymph capillaries with the lymph nodes.
The synovial membrane has special cells and many capillaries (tiny blood vessels).
Normally, oxygenated blood flows to the tissue through arteries and capillaries.
As your pregnancy continues, the blood flow to your cervix, vagina, and perineum increases and tiny capillaries may burst during intercourse.
Bruises occur when blood is released from the capillaries into the skin's tissues, usually as a result of forceful contact with an object or even a person.
The enzymes apparently work to reduce leaking blood under the skin and strengthen capillaries so that they are less inclined to leak at all, thus keeping dark circles at bay.
Under eye circles are the result of broken capillaries underneath the thin skin below the eye area.
Weakened, leaky capillaries draining under the eyes makes them look swollen and puffy.
As one of the most important layers of the skin, the dermis supplies blood to all the layers of the skin through tiny veins called capillaries.
In the case of many Oligochaeta where there is no vascular network surrounding the nephridium, this function must be the chief one of those glands, the more elaborate process of excretion taking place in the case of nephridia surrounded by a rich plexus of blood capillaries.
Nephridia always paired and without plexus of blood capillaries.
In favour of seeing in the lateral trunks and their branches a vascular system, is the contractility of the former, and the fact of the intrusion of the latter into the epidermis, matched among the Oligochaeta, where undoubted blood capillaries perforate the epidermis.
These tubes are lined by flattened epithelium and often contain blood capillaries; they communicate with the coelom and are to be regarded as prolongation of it into the thickness of the body wall.
The arterial system is very completely developed in both Limulus and Scorpio, branching repeatedly until minute arterioles are formed, not to be distinguished from true capillaries; FIG.
This lipoemic condition may cause embolism, the plugging especially occurring in the lung capillaries.
It is now commonly used to indicate the transparent homogeneous structureless swellings which are found affecting the smaller arteries and the capillaries.
It spreads forwards, affecting the supporting fibres outside the epithelium of the capillaries, and then passes to the connective-tissue fibrils of the veins.
Melanine particles formed in the spleen in malaria, which pass along with the blood through the liver, are appropriated by the endothelial cells of the hepatic capillaries, and are found embedded within their substance.
Thus Ludwig was of opinion that the lymph-flow is dependent upon two factors, first, difference in pressure of the blood in the capillaries and the liquid in the plasma spaces outside; and, secondly, chemical interchanges setting up osmotic currents through the vessel-walls.
Heidenhain recognizes two classes, first, such substances as peptone, leech extract and crayfish extract; and, secondly, crystalloids such as sugar, salt, &c. Starling sees no reason to believe that members of either class act otherwise than by increasing the pressure in the capillaries or by injuring the endothelial wall.
The increased flow of lymph is due to the increased pressure in the abdominal capillaries.
From these intralobular capillaries run toward the centre of the lobule, forming a network among the polygonal hepatic cells.
One result of this among the Vertebrata is that the eyeball is pink in colour, since the cornea, iris and retina being transparent, the red blood contained in the capillaries is unmasked by the absence of pigmentary material.
Each tiny alveolus is surrounded by a network of capillaries that joins veins and arteries.
These are not broken capillaries although everyone terms them as such, but rather permanently dilated capillaries.
The new service which uses the ABI PRISM 3100, a fluorescence-based DNA analysis system incorporating capillary electrophoresis with 16 capillaries operating in parallel.
The distended capillaries allow large molecules e.g. fibrinogen, red blood cells, to escape into the interstitial spaces.
The dermal papilla is in direct contact with blood capillaries in the skin to derive the nutrients for the growing hair follicle.
Explain that the blood vessel leaving a glomerulus is narrower than the one entering it and so pressure in the glomerular capillaries is high.
The pulmonary vessels form the rich plexus of capillaries around the alveoli.
The vascular system is highly developed (in the non-degenerate forms); large arterial branches closely accompany or envelop the chief nerves; capillaries are well developed.
The members of the first class influence the endothelial plates of the capillaries injuriously, inducing thereby increased permeability; those of the second class (sugar, &c.), on injection into the blood, attract water from the tissues and cause a condition of hydraemic plethora with increased capillary pressure.
Malpighi's demonstration of the blood capillaries in 1668, and six years later he gave the first accurate description of the red blood corpuscles, which he found to be circular in man but oval in frogs and fishes.
This system is in no true sense a vascular system; there are no capillaries, and the fluid it contains, which is corpusculated, can hardly have a respiratory or nutritive function.
This is something that should never be done today however, since broken capillaries and blemish breakouts can occur.
The histamine causes the tiny blood vessels, called capillaries, to leak fluid resulting in an eruption of hives.
Purpura, a purplish or reddish-brown rash or discoloration of the skin, and petechiae, small round pinpoint hemorrhages, are both caused by the leakage of blood from tiny capillaries under the skin.
These areas of discoloration are caused by bleeding from broken capillaries.
It can affect any type or size of blood vessel-large arteries and veins as well as arterioles, venules, or capillaries.
Purpura comes from the Latin word for "purple" and refers to the reddish-purple spots on the skin caused by leakage of blood from inflamed capillaries.
Blood vessels-General term for arteries, veins, and capillaries that transport blood throughout the body.
Errors in platelet counting are more common when blood is collected from capillaries than from veins.
In the lungs, capillaries are located next to the alveoli so that they can pick up oxygen from inhaled air.
They are also used to stop superficial bleeding by contracting the capillaries and for relief of conjunctivitis.