Epinephrine triggers a direct signal transduction pathway.
I know this because when epinephrine binds to it's receptor example on a muscle cell,this is known as a type of G protein -coupled receptor,signal transduction cascade is triggered and this involves the production of a second messenger molecule cyclic AMP(cAMP).
Epinephrine also know as Adrenaline or sus-phrine.
It is a vasoconstrictor,broncho dilator and a sympathetic stimulant.
It constricts the peripheral abdominal organs as well as a stimulating the heart beat thereby raising the blood pressure,it also relaxes the spasms of the bronchial muscles thereby promoting ventilation of the lungs.
Arteries are used to carry oxygenated blood away from the heart to the tissues & body. Capillaries are very tiny blood vessels that form a network with the tissue to exchange blood and nutrients. They work work with the arteries.
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<h2>Positive Reinforcement and Operant Conditioning </h2>
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<h3>thanks me later </h3>
The answer is b hope this helps
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Explanation:
Salt is soluble, meaning it can dissolve in water, while sand is not
