hormones Flashcards
what do hormones do?
enable info between cells from endocrine glands - carried in bloodstream
similarities between neural and endocrine communication
chemicals for later release, act as hormones and neurotransmitters, react w receptors
differences between neural and endocrine communication
neural fixed and endocrine generalised, neural = quick, hormonal = slower, neural = synapse, hormones = blood
functions of hormones - regulation
growth and development, reproduction, metabolism, homeostasis, control of internal organs
homeostasis
regulation of the correct state for each body system
pineal gland
melatonin - produced in evening and night, regulate sleep cycle
pituitary anterior
tropic hormones (release of other hormones) - growth, adrenal, thyroid, sex organs, prolactin
prolactin
lactation and breast development
pituitary posterior
oxytocin and antidiuretic hormones
oxytocin
reproductive system and ‘love hormone’
antidiuretic hormones
water and salt levels, urine production, blood pressure
adrenal medulla
adrenaline and noradrenaline - fight/flight
adrenal cortex
sex and stress hormones, mineralcorticoids
mineralcorticoids
help kidneys
pancreas
insulin glucagon - regulate glucose levels
testes
androgens - male sex hormones - testosterone increases male characteristics
ovaries
estrogens - female sex hormones - estradiol - external changes in puberty, progesterone - thickening in lining of uterus
sex studies - EXTON 1999
control = doc, exp = doc, porn, doc
higher levels of fight/flight hormones with porn masturbation
further sex studies - KRUGER 2002
males = orgasm causes prolactin release for 60+ min after
females = lower prolactin
prolactin
reduces sexual desire and likelihood of more orgasms
multi-orgasmic men produce less so no reduction in desire = more orgasms
