chpater 7 Nerve Cells and Electrical Signaling Flashcards
1
Q
what organs are apart of the CNS
A
- brain
-spinal cords
2
Q
what organs are apart of the PNS?
A
- afferent info
- efferent info
3
Q
what kind of cells are neurons
A
- excitable
4
Q
what kind of cell are Glial cells
A
- supporting cells
5
Q
what are the 5 compotes of a neuron?
A
- soma
- dendrites
- axon
- axon hillock
- axon terminal
6
Q
what is the function of the soma (cell body)?
A
- Contains nucleus and most organelles
7
Q
what is the function of the dendrites?
A
- Reception of incoming information
8
Q
what is the function of the axon?
A
- Transmits electrical impulses called action potentials
9
Q
what is the function of the axon terminal?
A
- Releases neurotransmitter
10
Q
what is the function of the axon hillock?
A
- Where axon originates and action potentials are initiated
11
Q
what is anterograde transport?
A
- transport from soma to axon terminal (whole cell except receiving end aka dendtrites)
12
Q
what is retrograde transport?
A
from axon to soma
- contains Microtubules and neurofilaments
13
Q
define a synapse
A
- Site of communication between
two neurons or between a
neuron and an effector organ
14
Q
A
