1000ft review Flashcards
What is the “master gland” in the endocrine system
pituitary
What are the different groups of hormones
endocrine
paracrine
autocrine
What are endocrine hormones
cells that are distanced from one another are able to communicate
What are paracrine hormones
Communication locally between cells
What are autocrine hormones
mechanisms within the cell itself
What are the different categories in hormone regulation
diurnal patterns (day/night)
Cyclical release
Neg-pos feedback loop
What are neuroendocrine hormones
hormones secreted from neurons which can include transmission via gap junctions
What are the chemical classifications of hormones
amino acid based
steroids
What are amino acid base hormones
derived from tryptophan or tyrosine
larger in size
typically water soluble and can travel through blood easily but need secondary messenger system to cross cell membrane
What are steroid hormones
Created from cholesterol and are hydrophobic
*need buddy system to travel in the blood
*can cross cell membrane easily
How do circulating hormones of endocrine reach the target cells
via the blood
How do local hormones of endocrine system reach target cells
By diffusing into local interstitial fluid and affect only neighboring target cells
How will water soluble hormones be broken down
rapidly by circulating enzymes
Can a hormone be bound to a protein to have an effect on an organ
no- it must be free
What happens to the target sites during times of low hormone or vice versa
up regulation
