Reading...
Play button
Play button
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
|
functions of the nervous system
|
sensory, integration, motor
|
|
|
afferent pathways
|
sensory information
|
|
|
efferent pathways
|
motor information
|
|
|
parts of the CNS
|
brain and spinal cord
|
|
|
parts of the PNS
|
peripheral nerves (31 pairs)
|
|
|
neuroglial cells, name and function of
|
oligodendrities (myelin)
astrocytes (scaffolding) microglia (phagocytes) ependymal (circulate CSF) |
|
|
neuron, function of and parts
|
function: pass along electrical impulses
parts: dendrites (incoming), soma (body), axon (outgoing) |
|
|
location of interneurons
|
CNS
|
|
|
function of Shwann cells
|
Myelin sheath, in the PNS
|
|
|
Conducting a nerve impulse:
Polarized state Depolarization Repolarization Restore resting potential |
polarized state: Na out, K in
depolarization: Na in repolarization: K goes out restore resting potential: Na/K pump |
|
|
saltatory conduction, characteristics of
|
with myelin, 60X faster than conduction w/o myelin
|
|
|
composition and location of gray and white mater in the CNS
|
white: myelinated axons outside spinal cord and inside brain
gray: unmyelinated axons, dendrites, cell bodies, found outside of the brain and inside the spinal cord |
|
|
types of neurons by structure
|
unipolar (sensory)
bipolar (special senses) multipolar (everywhere else, CNS, motor pathways, 99% of neurons) |
|
|
types of neurons by function
|
sensory, integration, motor
|
