Flashcards in Chapter 6 Deck (15):
What are the 4 basic methods of cell communication?
Gap Junction, Contact Dependent, Chemicals that diffuse, Combination of Chemical and Electrical Signals
what is a paracrine signal?
A chemical that acts on cells in the immediate vicinity
what is a good example of a paracrine signal?
what are chemicals secreted by neurons called?
what type of nuerocrine has a rapid onset?
Why do some cells respond to chemical signals but not others?
Differences in the receptor proteins
What is a first messenger?
The ligand that binds to the target cell
What are the 3 types of cell receptors?
G protein-coupled receptors, receptor-enzyme, and integrin receptors
What is signal transduction?
The process of how a cell converts a signal into a response
What are the two common amplifiers for g proteins?
Adenyly cyclase, and phosphlipase C
In the tyrosine kinase pathway what does the amplifier enzyme convert gtp too?
Name two processes that can stop receptor activity?
Can be degraded by enzymes, or terminated by endocytosis
What is tonic control?
A signal is always present, but changes in the intensity of the signal cause a change in response
In what reflex does an endocrine cell act as both a sensor and an integrating center?
Simple endocrine reflex