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MCAT > Endocrine System > Flashcards

Endocrine System Flashcards

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MCAT flashcards
1
Q

GnRH

A

gonadtropin Releasing Hormone

stimulates pituitary to release FSH and LH

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2
Q

CRF

A

Corticotropin Releasing Factor.

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3
Q

TRH

A

Thyroid Releasing Hormone

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4
Q

Dopamine

A

inhibits prolactin

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5
Q

GHRH

A

Growth Hormone Releasing Hormone

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6
Q

ADH

A

Antidiuretic Hormone

increase water reabsorption in kidney to conserve water and increase BP

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7
Q

Pineal Gland

A

makes melatonin that makes you sleepy

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8
Q

Calcitonin

A

reduces Ca2+ in blood, turns it into bone

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9
Q

Parathyroid

A

reabsorption of Ca2+, calcium reabsorption in kidneys

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10
Q

Thymus

A

stimulate T cells to develop

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11
Q

Thyroid

A

increase metabolism, requires iodine

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12
Q

Aldosterone

A

increase in Na+ and water retention

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13
Q

Cortisol

A

stress hormone, increase blood sugar

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14
Q

steroid hormones

A

cholesterol derivatives

testosterone, estrogen, adrenocortical

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15
Q

Hormones released by posterior pituitary

A

ADH- water retention and increase in Na+

Oxytocin- regulates uterine contractions during pregnancy and breast-feeding

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16
Q

Hormones secreted by the hypothalamus would be classified as:

A

paracrine

17
Q

All of the following are true of posterior pituitary hormones EXCEPT:

  1. they include ADH and Oxycotin
  2. Include direct and tropic hormones
  3. they are synthesized in the hypothalamus
  4. Nerve signal from hypothalamus stimulates response
A
  1. include direct and tropic hormones
18
Q

The concentration of hormones in the bloodstream is regulated by:

A

positive and negative feedback loops

19
Q

Biosynthesis of steroids begins with what?

A

binding of pyrophosphate to a terpene

20
Q

endocrine gland

A

ductless gland

21
Q

exocrine gland

A

secrete products into external environment by ducts

MCAT (9 decks)

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