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;
14 Cards in this Set
- Front
- Back
|
A tube-like structure that propagates a signal from a nueron's cell body to axon terminals. |
Axon |
|
|
The structures extend away from the neuron cell body; receives messages. |
Dendrites |
|
|
A change in the membrane potential to a negative less value. |
Depolarization |
|
|
______________, are glial cells that create myelin she's the around axons in the peripheral nervous system. |
Schwann cells |
|
|
Specialized cells that can receive and transmit electrical and chemical signals. |
Nuerons |
|
|
Gaps in the myelin sheath, where the neural signal id's recharged. |
Nodes of Ranvier |
|
|
A neurotransmitter released by neurons in the central nervous system and peripheral nervous system. |
Acetylcholine |
|
|
A self-propagating momentary change in the electrical potential of a neuron our muscle cell membrane. |
Action potential |
|
|
Which cation has the highest concentration in the extracellular fluids of cells? |
Sodium |
|
|
Which cation has the highest concentration in the intracellular fluids of cells? |
Potassium |
|
|
The awareness (sense) about how parts of the body are oriented in space. |
Procioception |
|
|
The junction between two neurons; where neuronal signals are communicated. |
Synapse |
|
|
The _________ are cavities in the brain that contains the cerebrospinal fluid. |
ventricles |
|
|
A division of the autonomic nervous system activated during stressful "fight or flight" situations. |
Sympathetic nervous system |
