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Cell to Cell signaling
EXAM 2
13
Medical
Professional
08/31/2010

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Cards

Term
what type of molecule binds to cell surface receptors?
Definition
hydrophillic
Term
what type of molecule binds to intracellular receptors
Definition
small hydrophobic molecules bound to carrier protein
Term
what is endocrine signaling
Definition
hormone is released into the blood and binds to target molecule.
Term
what is paracrine signaling?
Definition
molecule is secreted by a near by cell and binds to that cells receptor
Term
autocrine signaling
Definition
the cell secretes a molecule and that molecule binds to a receptor on the cell
Term
what does ligand receptor interaction between cells do?
Definition
activates intracellular signaling molecules
Term
how do cells secrete messages to each other?
Definition
gap junctions
Term
what is connexin?
Definition
proteins that make up a connexon structure
Term
what is a connexon?
Definition
assembly of six proteins that forms gap junction between the cytoplasm of two adjacent cells
Term
what can make a signal molecule have different effects?
Definition
receptor expression
Term
why is there no signal amplification in steroids?
Definition
because they do not bind to enzymes to potentiate.
Term
what is involved in receptor sequestration?
Definition
receptor, endosome, signal molecule
Term
what is involved in receptor down regulation
Definition
lysosome, receptor, molecule
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