Endocrine Flashcards
exocrine signaling
short distance signaling
paracrine signaling
nearby cell communication (para is greek for side by side)(adjacent)
juxtacrine signaling
cells DIRECTLY in contact with one another
autocrine signaling
cell signaling to itself (auto is greek for self)
all nerve cells use…
paracrine signaling
Steroids pass through phosphorus bilayer…
easily
peptide hormones pass through phosphorus bilayer…
not easily
peptides are…
fast acting, short living (not long term)
Why are proteins short lived?
Degrades quick in cytoplasm
oxytocin
positive feedback mechanism (+ feedback are hard to control) (uterine contraction)
Peptide nemonic
INsane (most that end or start with -in in- are peptide hormones) (ADH is exception)
steroids take longer because
they go through the cellular membrane and also into the nucleus
which steroids can be permanent?
estrogen, testosterone
aldosterone
nephron regulator (raises blood pressure by messing with salt concentration)
steroids need…
carrier proteins, such as albumin
Steroids usually end in….
-one -ol -oid
Amino-acid derivatives end with?
-ine (amINE o acids)
aromatic rings mean?
non-polar