Endocrine Flashcards

(38 cards)

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:

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
TSH
thyroid-stimulating hormone
26
thyroxine
increases metabolic rate
27
growth hormones
promotes protein synthesis and use of body fat for energy promotes development and enlargement of all body parts
28
thyroid gland
multifunctional role in body function and homeostasis produces T4 and T3
29
people with an iron deficiency
hypothyroidism (enlargement of thyroid)
30
acute response
almost immediate due to activation of sympathetic division
31
chronic response
delayed response by few minutes due to activation of hypothalamo-pituitary axis
32
acute phase
-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
chronic phase
prepares body to cope with stress over long time cortisol or corticosterone response from minutes to days
34
sex hormones produced by:
gonads (ovaries, testes) and adrenal glands
35
estrogens
maintain female reproductive system, development of female features
36
progestins
prepare uterus to support embryo
37
androgens
stimulate embryo to become male, maintain male reproductive system
38
sex hormones regulated by:
hypothalamus and anterior pituitary