In geology, anastomosis refers to quartz ( or other ) veins displaying this property, which is often related to shearing in metamorphic regions.

The apparent blue color of veins in skin is a common example where both spectral absorption and scattering play important and complex roles in the coloration.

The usual color is white with crimson veins, but pink or purple also occur naturally.

Often, if the parchment is white or cream in color and veins from the animal can still be seen, it is calfskin.

They begin as prismatic quartz ( including the color sub-varieties such as Smoky Quartz and Amethyst ) in the quartz veins alongside the Delaware River that get eroded out of the host rock and wash down 200 miles to the shore.

The examination should be performed by ultrasonography — color flow doppler performed by highly experienced radiologist that will diagnose varicocele by demonstrating back-flow in the right and in the left spermatic veins.

Image: 3D rendered CT of abdominal aortic branches and kidneys. svg | 3D-rendered computed tomography, showing one renal artery ( in whitish color ) for each kidney, partially covered by the renal veins.

They are usually olive green in color, may have some brownish spots and have three veins down the length of the leaf .< sup > photo </ sup > True tejpat leaves impart a strong cassia-or cinnamon-like aroma to dishes, while the bay leaf's aroma is more reminiscent of pine and lemon.

It is a singularly beautiful substance, being of pink, greenish, or milk-white color, streaked with reddish copper-colored veins.

Al-Dahna desert is formed of high sand dunes spreading horizontally which are called veins ( ar: عروق ), mostly red in color since it contains Iron Oxides.

The oven-made leaves are deep green in color with red veins underneath.

Arteries and veins are apparent by their black, blood-filled centers and the surrounding white walls.

Arteries and veins are part of the human cardiovascular system.

Some of the synapomorphies of the order are: leaves in spiral, secondary veins palmated, calyx or perianth valvate, elevated stomatal calyx / perianth with separate styles.

Most variations are due to coughing or internal compression of jugular veins in the neck.

There are two veins of thought concerning the Grail's origin.

The characteristic swirls and veins of many colored marble varieties are usually due to various mineral impurities such as clay, silt, sand, iron oxides, or chert which were originally present as grains or layers in the limestone.

Targets are divided into two general categories of materials: placer deposits, consisting of valuable minerals contained within river gravels, beach sands, and other unconsolidated materials ; and lode deposits, where valuable minerals are found in veins, in layers, or in mineral grains generally distributed throughout a mass of actual rock.

The leaves are from long and cm broad, dark green with reddish veins, and with an acute apex and coarsely toothed margins.

The cellular consequences of ARF activation depend on the plant type and developmental stage, but are involved in directing growth in roots and leaf veins.

In nature, veins acting as valves are controlling the blood circulation ; heart valves control the flow of blood in the chambers of the heart and maintain the correct pumping action.

Varicose veins are veins that have become enlarged and tortuous.

Varicose veins are most common in the superficial veins of the legs, which are subject to high pressure when standing.

Secondary varicose veins are those developing as collateral pathways, typically after stenosis or occlusion of the deep veins, a common sequel of extensive deep venous thrombosis ( DVT ).

Varicose veins are distinguished from reticular veins ( blue veins ) and telangiectasias ( spider veins ), which also involve valvular insufficiency, by the size and location of the veins.

Most varicose veins are relatively benign, but severe varicosities can lead to major complications, due to the poor circulation through the affected limb.

The extinct medullosans produced a third type of resin, which is often found as amber within their veins.

The resulting tangle of blood vessels, often called a nidus ( Latin for " nest ") has no capillaries and abnormally direct connections between high-pressure arteries and low-pressure veins.

The metal therefore occurs often in free elemental ( native ) form, as nuggets or grains in rocks, in veins and in alluvial deposits.

Sclerotherapy is often used for telangiectasias ( spider veins ) and varicose veins that persist or recur after vein stripping.

Follow-up treatment to smaller branch varicose veins is often needed in the weeks or months after the initial procedure.

Sometimes the vein will actually pass tangent to the notch, but often it will pass by at a small distance, and when that happens a spur vein ( occasionally a pair of such spur veins ) branches off and joins the leaf margin at the deepest point of the notch.

Veins differ from arteries in structure and function ; for example, arteries are more muscular than veins, veins are often closer to the skin and contain valves to help keep blood flowing toward the heart, while arteries carry blood away from the heart.

The most common was phlebotomy, or venesection ( often called " breathing a vein "), in which blood was drawn from one or more of the larger external veins, such as those in the forearm or neck.

Although it is often confused with the more common poison ivy, even in the scientific literature, Atlantic Poison oak has small clumps of hair on the veins on the underside of the leaves, while Poison ivy does not.

* strangulation: pressure on the hernial contents may compromise blood supply ( especially veins, with their low pressure, are sensitive, and venous congestion often results ) and cause ischemia, and later necrosis and gangrene, which may become fatal.

The most convenient site is often the arm, especially the veins on the back of the hand, or the median cubital vein at the elbow, but any identifiable vein can be used.

They are often more difficult to insert correctly as the veins are not usually palpable and rely on an experienced clinician knowing the appropriate landmarks and / or using an ultrasound probe to safely locate and enter the vein.

Antiphospholipid syndrome or antiphospholipid antibody syndrome ( APS or APLS or ), often also Hughes syndrome, is an autoimmune, hypercoagulable state caused by antibodies against cell-membrane phospholipids that provokes blood clots ( thrombosis ) in both arteries and veins as well as pregnancy-related complications such as miscarriage, stillbirth, preterm delivery, or severe preeclampsia.

This often occurs in the renal veins.

Migmatites often appear as tightly, incoherently folded ( ptygmatic folds ) dikelets, veins and segregations of light colored granitic composition called leucosome, within dark colored amphibole and biotite rich material called the melanosome.

It is often used as a natural remedy for psoriasis, eczema, aftershave applications, ingrown nails, to prevent sweating of the face, cracked or blistered skin, for treating insect bites, poison ivy, and as a treatment for varicose veins and hemorrhoids.

It is often used as a natural remedy for psoriasis, eczema, aftershave applications, ingrown nails, to prevent sweating of the face, cracked or blistered skin, for treating insect bites, poison ivy, and as a treatment for varicose veins and hemorrhoids.

The body is often further modified to resemble vegetation, with ridges resembling leaf veins, bark-like tubercles, and other forms of camouflage.

The leaves are pinnate, 10 – 22 cm long and 6-12 cm broad, with 9 – 19 ( most often 13 – 15 ) leaflets ; each leaflet is 3 – 7 cm long and 15 – 23 mm broad, with a coarsely serrated margin ; they are variably hairy, particularly the petiole and leaf veins on the underside.

Small amounts of air often get into the blood circulation accidentally during surgery and other medical procedures ( for example a bubble entering an intravenous fluid line ), but most of these air emboli enter the veins and are stopped at the lungs, and thus a venous air embolism that shows any symptoms is very rare.

The leaves are alternate, 5 – 7. 5 cm long and 2 – 4 cm broad, stiff, yellow green and dull matte to sub-shiny above ( distinctly less glossy than the otherwise fairly similar European Holly Ilex aquifolium ), often pale yellow beneath ; the edges are curved into several sharp, spike-like points, and a wedge-shaped base and acute apex ; the midrib is prominent and depressed, the primary veins conspicuous ; the petiole is short, stout, grooved, thickened at base, with a pair of minute stipules.