Presentation 6th week Flashcards
endocrine vs nervous system
sending the messages with in the blood, electrochemical vs chemical, hormones reaches almost all cells in our body, excluding some of the hormones reaching out the brain (brain blood barrier) viruses bacteria etc hormones know where to go because of receptors key lock system, slow functioning, sometimes hormones can affect more than one cells in order to produce a hormone signal is needed this signal can be external and internal
hormones
about 60, keep functioning well , keep homeostasis circulading in our body in the blood
steroid hormones
lypid solluble, so that they can cross to cell zarı attach to that receptor, hormone receptor complex attaches to dna to produce proteins are needed
non stereoid hormones
not lypid solluble, so that they cant cross directly and work another process in surface they dont enter the cell, outside of the cell, with the help of enzymes
cascades
its the chain of reaction in terms of hormones. one hormone trigger the other and other etc
Pituitary Gland: master gland
hypothalamus control the functioning, 8 different hormones it is not considired as part of the brain has two lobes: anterior and posterior ACTH in anterior oxytocin is posterior
Adrenal glands
in two parts: cortex and medulla
cortex (adrenal gland)
cortisol and aldosterone
medulla (adrenal gland)
epinephrine or norepinephrine
in symphatatic system
pre ganglion is acelythorine, post ganglion is norepinephrine. adrenal glands recieved a message to produce norepinephrine as a hormone so we can alert in many ways. alpha receptor restricts blood flow inhibiting, beta receptor relaxes muscles so that blood flow can increase excitatory
cortisol
ramping up your blood pressure, dumping glucose in your blood shutting down nonemergency parts
