Endocrine System Flashcards
(27 cards)
Endocrine system
signaling by hormones cause long term changes, chemical signals that travel via circulatory system
amino acid derived hormones
usually with Tyrosine; ex; epinephrine, thyroxine
epinephrine
water soluble hormone involved in stress response
thyroxine
lipid soluble hormone involved in determining metabolic rate
polypeptide hormones
ex: gastrin, glucagon, insulin, leptin, secretin
eicosanoids
made from essential fatty acids; ex: prostaglandins, endocannabinoids
Prostaglandin
mediate inflammation in response
to injury
Anandamide
molecule THC is mimicking
steroid hormones
made from cholesterol and are lipid soluble
cortisol
- long term response to stress
- suppresses immune response
estradiol
- female reproduction
- female secondary sex
characteristics
testosterone
- male reproduction
- male secondary sex
characteristics
water-soluble hormones
polypeptide hormones; receptor only in plasma membrane
lipid-soluble hormones
steroid hormones; receptor in nucleus or cytoplasm, function by
activating the transcription of specific genes in target cells
Rapid Response to Stress
caused by epinephrine made by adrenal medulla, increase BP and heart rate
Slow Response to Stress
caused by cortisol made by adrenal cortex, increased metabolism and suppressed immune system
Dilated vessel
hormones bind to increase blood flow to areas of high activity
cortisol
response to long term stress, triggers break down of fats and proteins, controlled by hypothalamus and anterior pituitary, released by adrenal cortex
tropic hormones
hormones secreted by target cells of pituitary hormones to make other hormones
thyroid hormone
T3 and T4; metabolic rate, temp regulation, BP, heart rate, muscle growth
only molecules in the body containing iodine
T3 and T4 (thyroid hormone)
goiter
deficient production of thyroid hormones causes elevated TSH will cause growth of thyroid gland
pituitary growth hormone
determinant of our height, targets liver and stimulates the production of IGF-1 which stimulate bone and muscle growth
acromegaly and gigantism
hypersecretion of GH, often caused by pituitary tumor