Thrombin
"Initiated by endothelial injury and caused by local and humoral mechanisms". Other helpers such as thromboxane, platelets releasing prosaglandin and neural reflexes all aid in vasoconstriction of the vessels. (Porth & Matfin, 2009)
It prevents the anesthetic from being systematically absorbed. The local anesthetic will cause vasodilation, and this can push some of the drug into systemtic circulation. Epinephrine causes vasoconstricton and keeps the anesthetic drug in the area where it was administered.
Epinephrine should be safe in open angle glaucoma. It causes vasoconstriction, and results in a reduced amount of aqueous humor production.
because your body tries to reduce heat loss to the surroundings so the blood vessels constrict so the blood stays at the core of the body rather than reach the skin where heat will easily be lost to the surroundings.
Vasoconstriction is primarily initiated by the release of vasoconstrictor substances such as norepinephrine and angiotensin II, which cause smooth muscle contraction in blood vessel walls. Conversely, vasodilation is triggered by factors like nitric oxide, prostacyclin, and certain hormones, leading to the relaxation of smooth muscles and widening of blood vessels. Additionally, local metabolic signals such as increased carbon dioxide and decreased oxygen levels can also prompt vasodilation in specific tissues. Thus, these processes are regulated by a complex interplay of neural, hormonal, and local factors.
because it release harmful gasses that causes our atmosphere to be destroyed.
Vasoconstriction of an arteriole can be caused by signals from the sympathetic nervous system, circulating hormones like epinephrine and norepinephrine, or local factors such as low oxygen levels or increased levels of certain molecules like endothelin. It results in the narrowing of the arteriole, which increases peripheral resistance and raises blood pressure.
Peripheral vasoconstriction is the tightening of the blood vessels, particularly the arteries. It is caused by smoking, drinking alcohol and coffee, as well as the intake of medicine such as antihistamine.
Muscle Spasm, this would be referring to when a blood vessel is broken, the response to fix it would be vasoconstriction. A myogenic spasm would aid in the loss of blood by briefly constricting the muscle where the broken blood vessel is located.
This substance is called histamine.
Local Talent - 2012 was released on: USA: 2012
By fighting with people in the community and do bad things in the community