Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
what is the primary function of the nervous system?
|
communication between cells
|
|
what TYPES of signals are sent by nerve cells?
|
electrochemical and chemical NOT mechanical
|
|
what types of ions are involved in an electrochemical signal sent down by axon?
|
K+ and Na+ ONLY not NO3-
|
|
what type of COMMUNICATION is depicted in this illustration
|
only electrochemical
|
|
refer to the diagram in 138. what features are located (node of ranvier)
|
sodium and potassium ion gates and pumps
|
|
what is the function of the schwann cell and myelin in the nervous system
|
to INSULATE the axon and promote signal transmission
|