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Does cocain make the blood vessels in your brain contract or expand?

Blood vessels in the brain of a cocaine user will narrow so that means the vessels contract.


Causes the blood vessels to contract?

vasoconstrictor


Does vasoconstrictor expand the blood vessels?

The answer to this true or false question is false. I got this answer from the last part... constrictor. constricting means to get smaller. There for the answer is false.


Do blood vessels constrict or expand when a person overheats?

yes


Does Nicotine contract blood vessels?

True


What is the highest pressure against the blood vessels and also occurs when the ventricles contract?

The highest pressure against the blood vessels is Systolic Pressure, and it occurs when the ventricles contract.


How does amlodipine relax the blood vessells?

By activating nitric oxide synthase and prostagladin pathways.


The second layer surrounding the lumen?

The second layer surrounding the lumen in blood vessels is the tunica media. It is composed of smooth muscle cells and elastic fibers, allowing it to contract and expand to regulate blood flow and pressure.


Does histamine cause blood vessels to contract?

No it causes them to dilate (vasodilation)


How does your pulse beat?

When the heart beats it causes blood to flow through the blood vessels which causes them to expand. This expansion can be felt by touching the vessels that are close to the skin.


Why do veins dilate?

Veins contract and expand in response to blood pressure.


What are similarties between arteries and veins?

They're both formed of "smooth muscles", which have the following aspects: * They can contract or expand hard and slow * They can contract or expand soft and fast * They do not fatigue in the way striated muscles do (every heard anyone say, "My veins sure are tired?" They comprise the circulatory system.