Ch 6 Reading Notes

Question 1

Two types of communication

Answer 1

Electrical

Chemical

Question 2

4 basic methods of cell to cell communication

Answer 2

Gap junction
Contact dependent
Chemicals that deffuse through the exf
Combination of electrical and chemical in blood

Question 3

Cytokines

Answer 3

Nucleated cells secrete them
Control cell development immune response
Broad spectrum

Question 4

Target cell receptor

Answer 4

A cell can only respond to a chemical signal if it has the appropriate receptor

Question 5

Ligand

Answer 5

Signal molecule

Question 6

4 categories of membrane receptors

Answer 6

Channel
Receptor enzyme
G protein
Integrin

Question 7

Steps to signal transduction

Answer 7

Signal molecule binds with receptor
Activates protein
Second message
Response

Question 8

Location of receptors

Answer 8

Cell membrane, nucleus, cytosol

Question 9

Ca can be regulated by

Answer 9

Pumping into the ER or out to ecf

Question 10

Cannons 4 postulates

Answer 10

1) nervous system has a role of preserving the fitness of the internal environment.
2) Some systems are under tonic control- always on but can be modulated .
3) some systems are under antagonistic control- parasympathetic and sympathetic
4) 1 chemical signal can have different effects on different tissues.

Question 11

7 steps to reflex control pathway

Answer 11

Stimulus
Sensor/ receptor
Input signal
Integrating center
Output signal
Target
Response