ADRENAL MEDULLA Flashcards

Catecholamines (synthesis , function and regulation ) , Physiology of pheochromocytomas

1
Q

Percentage occupied by adrenal medulla of total adrenal gland

A

20%

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2
Q

Hormones secreted by A.medulla

A

Epinephrine
Nor epinephrine
Dopamine

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3
Q

Epinephrine and Nor epinephrine

Are synthesized through

A

Tyrosine

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4
Q

Normal plasma values of catecholamines are

A

Epinephrine - 0.2mcg/kg/min

Not epinephrine - 0.05mcg/kg/min

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5
Q

Enzymes used for destruction of catecholamines are

A

Monamine oxidase

Catechol-O-Transferase

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6
Q

Cells releasing catecholamines are called

A

Chromaffin cells / Pheochromocytes

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7
Q

Chromaffin cells are activated through which NT

A

Acetylcholine

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8
Q

Effect of Cmines on liver

A

Increased glucose release

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9
Q

Effect of Cmines on fat cells

A

Increased lipolysis

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10
Q

Effect of Cmines on muscle

A

Increased muscle strength and increased glucose production

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11
Q

Which Cmine is better vasoconstricter

A

Norepinephrine

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12
Q

Which Cmine is better cardioaccelerator

A

Epinephrine

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13
Q

Whcih Cmine increases tissue metabolism to a greater extent

A

Epinephrine

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