Adrenaline: The Powerful Hormone for Fight or Flight Response
Adrenaline, also known as epinephrine, serves as an excitatory neurotransmitter produced by the adrenal glands, nestled atop the kidneys. Its primary role revolves around preparing the body for the instinctive fight or flight response. As soon as adrenaline enters the bloodstream, it triggers a chain of physiological reactions: the heart beats faster and stronger, the smooth muscles in the airways relax, and the liver ramps up its production of glucose. In certain medical scenarios, doctors may administer a synthetic form of this neurotransmitter to effectively manage anaphylaxis and asthma attacks, providing relief from breathing difficulties.
Dopamine: The Dual-Role Neurotransmitter
Dopamine, a neurotransmitter, acts both as an excitatory and inhibitory agent in the brain. It holds significant importance in fueling motivation and the drive to accomplish goals due to its interaction with the brain’s reward system. However, substances such as alcohol and opioids have the ability to elevate dopamine levels in the bloodstream, leading to heightened synaptic activity. This physiological response often results in symptoms like daydreaming, difficulty concentrating, and intoxication.