Physiology · Multiple Systems · Medium
Agonist
Meaning: A drug that binds to a receptor and activates it, mimicking the natural chemical.
In practice: Salbutamol stimulates beta-2 receptors in the airways to relax bronchial smooth muscle.
Quick check
Two questions on related physiology words.
Which word means: The ability of cardiac or neural tissue to transmit electrical impulses from cell to cell.
Answer: Conductivity
Which word means: A decrease in membrane potential, triggering a nerve or muscle action potential.
Answer: Depolarisation
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