Endocrine Flashcards

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1
Q

endocrine system regulated by

A

feedback loops

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2
Q

all animals use ____

A

endocrine signals

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3
Q

where are chemical signals carried

A

body fluids

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4
Q

gland definition

A

organ/tissue responsible for synthesis and secretion of cellular products

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5
Q

endocrine definition

A

secretion of material into extracellular spaces or blood vessels

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6
Q

hormone

A

signaling molecule secreted by endocrine cells
regulates physiology, behavior, development

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7
Q

exocrine

A

secretion of material onto a body surface or into a duct

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8
Q

non-steroid hormones

A

cannot pass through membrane by simple diffusion

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9
Q

hormones binding to plasma membrane are derived from ___

A

amino acids

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10
Q

fast hormones

A

bind to plasma membrane receptors

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11
Q

slow hormones

A

bind to intracellular receptors

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12
Q

hormones binding to inside of cell are ___

A

lipids derived from cholesterol

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13
Q

hormones produced in a synthesis pathway can ___

A

act as a hormone or neurotransmitter

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14
Q

where are hydrophilic hormones stored

A

secretory vesicles

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15
Q

diversity of steroids made from ___

A

cholesterol

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16
Q

what regulates hormone levels in blood/fluid

A

homeostatic feedback loops
altering rate of hormone synthesis or secretion

17
Q

endocrine messengers produced by:

A

all tissues

18
Q

body fluids

A

are a soup of messengers

19
Q

what cells will respond to a hormone

A

only cells with the specific receptor

20
Q

what produces steroid hormones

A

only adrenal glands and sex organs

21
Q

hypothalamus

A

control center of endocrine system, acts through pituitary gland

22
Q

posterior pituitary

A

nervous tissue that stores and secretes hypothalamus hormones

23
Q

anterior pituitary

A

glandular tissue that produces and secretes its own hormones

24
Q

TRH

A

TSH releasing hormone

25
Q

TSH

A

thyroid-stimulating hormone

26
Q

thyroxine

A

increases metabolic rate

27
Q

growth hormones

A

promotes protein synthesis and use of body fat for energy
promotes development and enlargement of all body parts

28
Q

thyroid gland

A

multifunctional role in body function and homeostasis
produces T4 and T3

29
Q

people with an iron deficiency

A

hypothyroidism (enlargement of thyroid)

30
Q

acute response

A

almost immediate
due to activation of sympathetic division

31
Q

chronic response

A

delayed response by few minutes
due to activation of hypothalamo-pituitary axis

32
Q

acute phase

A

-prepares body for immediate survival
-prolongs body response in flight or fight response
-adrenal gland secretes two hormones (epinephrine & norepinephrine) when sympathetic NS is max active

33
Q

chronic phase

A

prepares body to cope with stress over long time
cortisol or corticosterone
response from minutes to days

34
Q

sex hormones produced by:

A

gonads (ovaries, testes) and adrenal glands

35
Q

estrogens

A

maintain female reproductive system, development of female features

36
Q

progestins

A

prepare uterus to support embryo

37
Q

androgens

A

stimulate embryo to become male, maintain male reproductive system

38
Q

sex hormones regulated by:

A

hypothalamus and anterior pituitary