Examlex
Distension of the renal pelvis due to obstruction or backflow is called ________.
Hippocampus
A region of the brain involved in the formation of new memories and is associated with learning and emotions.
Agonists
Chemicals that bind to and activate specific receptors in the body, mimicking the effects of natural substances.
Antagonists
Substances or drugs that block or dampen the action of neurotransmitters or hormones, reducing their effects on the body.
Psychoactive Drugs
Psychoactive drugs are substances that affect the brain and change perception, mood, consciousness, cognition, or behavior.
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