Podcast
Questions and Answers
Adrenaline primarily acts on the heart through its interaction with the beta-2 receptors.
Adrenaline primarily acts on the heart through its interaction with the beta-2 receptors.
False
The vasoconstriction effect of high doses of adrenaline is mainly mediated by alpha-2 receptors.
The vasoconstriction effect of high doses of adrenaline is mainly mediated by alpha-2 receptors.
False
Epinephrine's effect on bronchial muscles is relaxation, primarily mediated by alpha-2 receptors.
Epinephrine's effect on bronchial muscles is relaxation, primarily mediated by alpha-2 receptors.
False
Adrenaline causes relaxation of smooth muscles in the gastrointestinal tract, primarily through beta-2 receptors.
Adrenaline causes relaxation of smooth muscles in the gastrointestinal tract, primarily through beta-2 receptors.
Signup and view all the answers
Alpha-1 receptors are mainly present in the heart and kidneys.
Alpha-1 receptors are mainly present in the heart and kidneys.
Signup and view all the answers
Beta-2 receptors play a role in the contraction of the iris radial muscle, leading to mydriasis.
Beta-2 receptors play a role in the contraction of the iris radial muscle, leading to mydriasis.
Signup and view all the answers
Acetylcholine primarily affects beta receptors on blood vessels.
Acetylcholine primarily affects beta receptors on blood vessels.
Signup and view all the answers
Epinephrine is rapidly inactivated in the liver by Monoamine Oxidase (MAO) and Catechol-o-methyltransferase (COMT).
Epinephrine is rapidly inactivated in the liver by Monoamine Oxidase (MAO) and Catechol-o-methyltransferase (COMT).
Signup and view all the answers
Norepinephrine has significant effects on beta-2 receptors.
Norepinephrine has significant effects on beta-2 receptors.
Signup and view all the answers
Noradrenaline is used as a vasopressor agent in treating hypotensive states.
Noradrenaline is used as a vasopressor agent in treating hypotensive states.
Signup and view all the answers
Propranolol increases heart rate.
Propranolol increases heart rate.
Signup and view all the answers
Atropine is an adrenergic antagonist.
Atropine is an adrenergic antagonist.
Signup and view all the answers
Norepinephrine causes vasodilation.
Norepinephrine causes vasodilation.
Signup and view all the answers
Acetylcholine is metabolized by MAO and COMT enzymes.
Acetylcholine is metabolized by MAO and COMT enzymes.
Signup and view all the answers
Epinephrine is ineffective when administered orally.
Epinephrine is ineffective when administered orally.
Signup and view all the answers
Propranolol can be used for the prophylaxis of angina pectoris.
Propranolol can be used for the prophylaxis of angina pectoris.
Signup and view all the answers
Acetylcholine is a non-selective muscarinic and nicotinic agonist.
Acetylcholine is a non-selective muscarinic and nicotinic agonist.
Signup and view all the answers
Atropine is a non-selective muscarinic antagonist.
Atropine is a non-selective muscarinic antagonist.
Signup and view all the answers
Acetylcholine causes vasodilation through the NO pathway on vascular endothelium.
Acetylcholine causes vasodilation through the NO pathway on vascular endothelium.
Signup and view all the answers
Adrenaline is commonly used as a cholinergic agonist in clinical practice.
Adrenaline is commonly used as a cholinergic agonist in clinical practice.
Signup and view all the answers
Propranolol acts as a cholinergic antagonist.
Propranolol acts as a cholinergic antagonist.
Signup and view all the answers
Noradrenaline mediates its effects through activation of muscarinic receptors.
Noradrenaline mediates its effects through activation of muscarinic receptors.
Signup and view all the answers