PATHOLOGY

Detailed explanation-1: -Abstract. Norepinephrine (NE) can raise blood pressure and speed up heart rate. However, because its effect of raising heart rate is less than that of reflex reduction of heart rate caused by the increase of blood pressure, NE causes more heart rate decrease in patients.

Detailed explanation-2: -Norepinephrine promotes vasoconstriction, which is a narrowing of the blood vessels. This, in turn, increases blood pressure. Like epinephrine, norepinephrine also stimulates alpha-adrenoreceptors in the cells of the blood vessels. It increases heart rate and blood sugar levels.

Detailed explanation-3: -Norepinephrine, also called noradrenaline, has effects similar to those of epinephrine, such as: increased blood sugar levels. increased heart rate. increased contractility.

Detailed explanation-4: -In the brain, norepinephrine increases arousal and alertness, promotes vigilance, enhances formation and retrieval of memory, and focuses attention. It also increases restlessness and anxiety.