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Drugs MRCP > Adrenoceptors > Flashcards

Adrenoceptors Flashcards

1
Q

What is the action of alpha 1 adrenoceptors?

A

Vasoconstriction
Relaxation of GI smooth muscle
Salivary secretion
Hepatic glycogenolysis

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2
Q

What is an alpha 1 agonist drug?

A

Phenylephrine

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3
Q

What are some alpha 1 antagonists?

A

Doxazosin
Tamsulosin (alpha 1a)

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4
Q

What is the action of alpha 2 adrenoceptors?

A

Inhibit insulin
Platelet aggregation
Presynaptic inhibition of transmitter release

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5
Q

What is an alpha 2 agonist?

A

Clonidine

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6
Q

What is the action of beta 1 adrenoceptors?

A

Mainly located in the heart - increase rate and force of contraction

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7
Q

What is a beta 1 agonist?

A

Dobutamine

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8
Q

What are some beta 2 antagonists?

A

Atenolol, bisoprolol

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9
Q

What is the action of beta 2 adrenoceptors?

A

Vasodilation
Bronchodilation
Relaxation of GI smooth muscle

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10
Q

What is a beta 2 agonist?

A

Salbutamol

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11
Q

What is a non selective beta antagonist?

A

Propranolol

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Drugs MRCP (10 decks)

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