MEDICAL PHYSIOLOGY

PHYSIOLOGY

NEUROTRANSMISSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which neurotransmitter influences alertness and arousal?
A
Acetylcholine (ACh)
B
Glutamate
C
GABA
D
Norepinephrine
Explanation: 

Detailed explanation-1: -Norepinephrine. Norepinephrine (also called noradrenaline) increases blood pressure and heart rate. It’s most widely known for its effects on alertness, arousal, decision-making, attention and focus.

Detailed explanation-2: -What does norepinephrine do in the body? As a neurotransmitter in your brain and spinal cord, norepinephrine: Increases alertness, arousal and attention. Constricts blood vessels, which helps maintain blood pressure in times of stress.

Detailed explanation-3: -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.

Detailed explanation-4: -First identified in the 1940s by Swedish physiologist Ulf von Euler, norepinephrine, also known as noradrenaline, is a neurotransmitter of the brain that plays an essential role in the regulation of arousal, attention, cognitive function, and stress reactions.

Detailed explanation-5: -Sexual excitation is hypothetically mediated by the neurotransmitters dopamine, norepinephrine, oxytocin, and melanocortins.

There is 1 question to complete.