What is physiological antagonism in pharmacology?
Physiological antagonism describes the behavior of a substance that produces effects counteracting those of another substance (a result similar to that produced by an antagonist blocking the action of an agonist at the same receptor) using a mechanism that does not involve binding to the same receptor.
What does antagonist mean in pharmacology?
(an-TA-guh-nist) In medicine, a substance that stops the action or effect of another substance. For example, a drug that blocks the stimulating effect of estrogen on a tumor cell is called an estrogen receptor antagonist.
Which pairs behave as physiological antagonists?
Some of the antagonistic pairs are as follows:
- Biceps and triceps.
- Gluteus maximum and hip flexors.
- Hamstrings and quadriceps.
- Pectoralis major and latissimus dorsi.
- Gastrocnemius and tibialis anterior.
- Abductor and adductor.
Which is the following pairs behave as physiological antagonist?
Physiological antagonism is found in: Isoprenaline and salbutamol. Isoprenaline and adrenaline. Isoprenaline and propanolol. Adrenaline and histamine.
What are antagonists psychology?
An antagonist is a chemical or drug that binds to receptors in the brain and prevents an agonist from having a reaction. Antagonists attach to the receptors in the brain and block the effect of agonists (which are chemicals that stimulate receptors and cause a response).
What are the different types of antagonists?
There are four main types of antagonists.
- A villain. The traditional definition of antagonist is a villain—a “bad guy” in the story, often working for evil purposes to destroy a heroic protagonist.
- A conflict-creator.
- Inanimate forces.
- The protagonist themselves.
Do physiological antagonists have efficacy?
By definition, antagonists display no efficacy to activate the receptors they bind. Antagonists do not maintain the ability to activate a receptor.