Endocrine Flashcards
exam 3
which system is faster the endocrine or nervous?
Nervous system is faster due to use of action potentials and neurotransmitters
Endocrine Glands include
Pituitary
Thyroid
Parathyroid
Adrenal
Pineal
ograns/tissues with endocrine cells
hypothalamus
thymus
pancrease
ovaries/testes
kidneys,liver,stomach, SI, Heart, skin, Adipose tissue
Exocrine Glands
secrete products into ducts or lumens or to the outer surface of the body
Endocrine Glands
secrete products into interstitial fluid(which diffuses into blood) or blood
hormones are
chemical messangers released in one part of the body and regulate activity in other parts of the body
Local hormones
act on neighboring cells (paracrine) or the same cell that secreated them (autocrine)
Dose not enter the blood stream first
circulating hormones
enter the interstital fluid and then bloodstream
can be lipid soluble(bound to transport proteins)
or water soluble(freely disolved in body fluids)
Lipid soluble hormones
are bound to transport proteins for transport in body fluids
can be steroid or thyroid
water soluble hormones
are freely dissolved in body fluids
steroid hormones are
a form of lipid soluble hormone derived from cholesterol
examples: cortisol, testosterone, estrogens, progesterone, aldosterone
thyroid hormones are
a type of lipid-soluble hormones that is very ipid soluble and is a tyrosine ring with attached iodines
peptide and protein hormones are
a type of water soluble hormone made of chains of amino acids
hypothalamic releasing and inhibiting hormones
examples: insulin, glucagon,EPO, ADH, oxytocin, hGH, TSH, ACTCH
Biogenic amines are
A type of water soluble hormones with modified amino acids
examples: NE, epinephrine, dopamine, serotonin, melatonin, histamine
main function of hormones
to maintain homeostasis and regulate many aspects of organ system functions
hormones leave secretory cell by
exocytosis or diffusion
what type of capillaries are found in endocrine glands
fenstrated capillaries wich are especially permeable type allowing for easy uptake of mater rom gland tissue
ACTH
Adrenocorticotropic hormone (corticotropin)
Source: anterior pituitary
ADH
Antidiuretic hormone (arginine vasppressin)
Source: posterior Pituitary
CRH
Corticotropin-releasing hormone
Source hypothalamus
DHEA
Dehydroepiandrosterone
Source: Adrenal cortex
EPO
Erythropoientin
Source: kidneys, liver
FSH
Follicle-stimulatin hormone
Source: Anterior pituitary
GH
growth hormone (somatotropin)
Source: anterior pituitary
GHRH
Growth Hormone-releasing hormone
Source: hypothalamus
GnRH
Gonadotropin-releasing hormone
Source Hypothalamus
IGFs
insulin-like growth factors (somatomedins)
Source: liver, other tissues
LH
Luteinizing hormone
Source: Anterior pituitary
NE
norepinephrine
Source: Adrenal medulla
OT
oxytocin
Source: psoterior pituitary
PIH
prolactin
Source: Anterior pituitary
PTH
Parathyroid hormone (parathormone)
Source: Parathyroids
T3
Triiodothronine
Source:Thyroid
T4
Thyroxine (tetraiodthyronine)
Source: thyroid