Receptors Flashcards
(7 cards)
1
Q
Ligand
A
Interacts with receptor
Carries message
Receptor selectivity
2
Q
Second Messengers
A
Cyclic AMP (cAMP)
Diacylglycerol
Inositol triphosphate
Calcium (Ca2+)
Activate downstream pathways
Fast
3
Q
Steroid
A
Fat soluble, permeable
Transcription factor
Slower; lasts longer
4
Q
Negative feedback loop
A
Stops or slows release of hormone
Most common
5
Q
Positive feedback loop
A
Brings about a biological response
6
Q
Agonists
A
Bind to receptor; triggers response
7
Q
Antagonists
A
Blocks an action
