Hormones Flashcards

1
Q

the endocrine system works together with the nervous system to maintain what

A

homeostasis

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2
Q

which glands are ductless

A

endocrine glands

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3
Q

which glands have ducts

A

exocrine glands

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4
Q

which gland secretes tiny amounts of hormones directly into the bloodstream

A

endocrine glands

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5
Q

which glands secrete their products on to the epithelial surfaces (example, gastric)

A

exocrine glands

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6
Q

chemical messengers produced by endocrine glands and secreted directly into blood vessels

A

hormones

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7
Q

hormones produce effects only when they bind to what

A

their specific receptors in or on cells

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8
Q

a cell that has receptors for a particular hormone is a ______ of that hormone

A

target

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9
Q

what are the three main groups of animal hormones

A

peptide
steroid
monoamine

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10
Q

which animal hormone is hydrophilic chains of amino acids

A

peptide hormone

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11
Q

peptide hormone receptors are located where

A

cell membranes of target cells

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12
Q

animal hormone that is a lipid synthesized from cholesterol

A

steroid hormone

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13
Q

what is the portion of the steroid hormone that is attached to the transport protein molecules

A

bound hormone

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14
Q

where are receptors for steroid hormones located

A

within the cell

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15
Q

which hormones are derived from amino acids and retain an amino group

A

monoamine hormones

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16
Q

what two hormones make up monoamine hormones

A

catecholamines
thyroid hormones

17
Q

where are receptors for catecholamines located

A

on the cell membrane

18
Q

where are receptors for thyroid hormones located

A

in the nucleus

19
Q

the level of hormone in blood directly or indirectly “feeds back” to where

A

the gland that produced it

20
Q

hormone feed back affects what

A

activity of the gland

21
Q

low hormone in the body = stimulates production
when needed levels are reach, production stops

A

negative feedback

22
Q

increase levels actually stimulate MORE hormone - less common and usually associated with repro

A

positive feedback