[permalink] [id link]
When erythrocytes undergo shear stress in constricted vessels, they release ATP which causes the vessel walls to relax and dilate so as to promote normal blood flow.
from
Wikipedia
Some Related Sentences
When and erythrocytes
When their hemoglobin molecules are deoxygenated, erythrocytes release S-nitrosothiols which also acts to dilate vessels, thus directing more blood to areas of the body depleted of oxygen.
When peripheral blood contaminates the withdrawn CSF, a common procedural complication, white blood cells will be present along with erythrocytes, and their ratio will be the same as that in the peripheral blood.
When and undergo
When monomers are linked together to synthesize a biological polymer, they undergo a process called dehydration synthesis.
When two monosaccharides undergo dehydration synthesis, water is produced, as two hydrogen atoms and one oxygen atom are lost from the two monosaccharides ' hydroxyl group.
When a request for change is received, it may undergo a preliminary review to determine if the requested change is compatible with the organizations business model and practices, and to determine the amount of resources needed to implement the change.
* When an < sup > 235 </ sup > U atom captures a neutron, it is converted to an excited state of < sup > 236 </ sup > U. About 81 % of the excited < sup > 236 </ sup > U nuclei undergo fission, but the remainder decay to the ground state of < sup > 236 </ sup > U by emitting gamma radiation.
When a large fissile atomic nucleus such as uranium-235 or plutonium-239 absorbs a neutron, it may undergo nuclear fission.
When Spaceball One begins to undergo its metamorphosis into " Mega Maid ," Dark Helmet exclaims " Ready, Kafka?
When cosmic rays enter the atmosphere, they undergo various transformations, including the production of neutrons.
When too many mast cells exist in a person's body and undergo degranulation, the additional chemicals can cause a number of symptoms which can vary over time and can range in intensity from mild to severe.
When using satyagraha in a large-scale political conflict involving civil disobedience, Gandhi believed that the satyagrahis must undergo training to ensure discipline.
When geopolymers are subjected to sufficient geothermal pressures for sufficient geologic time, they begin to undergo certain peculiar changes to become kerogen.
When embryonic ectodermal cells are cultured at low density in the absence of mesodermal cells they undergo neural differentiation ( express neural genes ), suggesting that neural differentiation is the default fate of ectodermal cells.
When reproducing, a spirochaete will undergo asexual transverse binary fission.
When these unusual creatures spring from hibernation, they undergo a fascinating and possibly unique genetic process.
When these genes are expressed in prokaryotic cells for the sake of protein production or purification, the RNA produced directly from transcription need not undergo splicing as the transcript contains only exons.
When combined, the reactants undergo a violent exothermic chemical reaction, raising the temperature to near the boiling point of water.
When these glands undergo a number of changes at the genetic level, they proceed in a predictable manner as they move from benign to an invasive, malignant colon cancer.
When these undergo substitution the stereochemistry will be inverted ( as in S < sub > N </ sub > 2 ) for many of the reacting molecules but a few may show retention of configuration.
When used, it is generally in combination with surgery and chemotherapy, or used only with chemotherapy in cases where the individual is unable to undergo surgery.
When survivors are able to talk with a rape crisis counselor as they undergo forensic exams and law enforcement interviews, they are more likely to participate in prosecutions and get the help they need to heal.
When the newly-elected Singapore government implemented compulsory conscription, all 18 year old able bodied Singapore males had to undergo training within the Armed Forces.
When taking the decision to undergo such a procedure it is recommended to compare the benefits with the potential risks and complications.
When a plume head encounters the base of the lithosphere, it is expected to flatten out against this barrier and to undergo widespread decompression melting to form large volumes of basalt magma.
When the mercury has evaporated, which is known by the surface having entirely become of a dull yellow color, the metal must undergo other operations, by which the fine gold color is given to it.
When Corpus falls to zero, a wraith may undergo a Harrowing ; Pathos can be spent to restore Corpus or to power various Arcanoi.
When and shear
* When the subring is isomorphic to the dual number plane, then g acts as a shear mapping and preserves the dual angle.
When strained, the zone between the straight and curved regions are subject to strong bending, shear, and longitudinal stresses.
When stationary fronts become smaller in scale, degenerating to a narrow zone where wind direction changes over a short distance, they become known as shear lines.
When the diameter of the blood vessel is slightly larger than the diameter of the red blood cell the Fahraeus – Lindquist effect occurs and there is a decrease in wall shear stress.
When the pins are excited they bounce all around the shear line and with the skilful application of a tension tool this is the easiest way to pick a lock.
When the Richardson number is large, the stratification is strong enough to prevent this shear instability.
When combined with the stresses formed, this creates a very brittle zone between the hard and softer metal, which usually makes this method unsuitable for swords or tools that may be subjected to shear and impact stresses.
When a nocturnal low-level jet forms overnight above the Earth's surface ahead of a cold front, significant low level vertical wind shear can develop near the lower portion of the low level jet.
When winds blow over a mountain, vertical shear is observed on the lee side.
When an outflow boundary forms due to a shallow layer of rain-cooled air spreading out near ground level from the parent thunderstorm, both speed and directional wind shear can result at the leading edge of the three dimensional boundary.
When a front becomes stationary, it can degenerate into a line which separates regions of differing wind speed, known as a shear line, though the wind direction across the feature normally remains constant.
When landing, wind shear is also a hazard, particularly when the winds are strong.
When masonry ( cut stone ) is used the angles of the faces are cut to minimize shear forces.
When the key is not in the lock, the pins straddle the shear point, preventing the plug from rotating.
When the key is inserted, the gaps between the key pins ( red ) and driver pins ( blue ) align with the shear plane separating the plug ( yellow ) from the outer casing ( green ).
When Ri is small ( typically considered below 1 / 4 ), then velocity shear is considered sufficient to overcome the tendency of a stratified fluid to remain stratified, and some mixing will generally occur.
When it exits the bottle, the shear forces are removed and it thickens back up, so it clings to the salad.
When the fibrous cap is degraded by metalloproteinases released from macrophages or by intravascular shear force from blood flow, subendothelial thrombogenic material ( extracellular matrix ) is exposed to circulating platelets and thrombus formation occurs on the vessel wall occluding blood flow.
When a mixing impeller rotates in the fluid, it generates a combination of flow and shear.
When compared to the compression wave, the shear wave is approximately one-half ( but may vary significantly from this estimate ) the velocity depending on the medium.
When a slope possesses this angle, its shear strength perfectly counterbalances the force of gravity acting upon it.
When high strength in shear is needed, spot welding is used in preference to more costly mechanical fastening, such as riveting.
When the cylinder to be studied has a r / t ratio of less than 10 ( often cited as 20 ) the thin-walled cylinder equations no longer hold since stresses vary significantly between inside and outside surfaces and shear stress through the cross section can no longer be neglected.
When it is under more shear, such as in the pipe to the bit and through the bit nozzles, viscosity is lower which reduces pumping-power requirements.
1.130 seconds.