Nerve Structure

Question 1

dendrites

Answer 1

receptive zone so of a neuron. most of the info coming in from other neurons is transmitted at these processes

Question 2

axon hillock

Answer 2

Functionally called the “trigger zone” because if the membrane of the cell body depolarizes sufficiently, or reaches threshold, and action potential (nerve impulse) will start and continue along the axon

Question 3

axon

Answer 3

Single fiber of a neuron that carries the action potential

Question 4

Axon Terminals

Answer 4

just like what it sounds like. When action potential reach this structure, NT’s are released in the synaptic cleft from the pre synaptic cell.

Question 5

Cell body and Cell Membrane

Answer 5

Business of neuron, ie NT production, occur hear. The membrane is where excitatory and inhibitatory inputs are summed along the membrane before the threshold voltage reaches the axon hillock

Question 6

node

Answer 6

small gap at the points where two Schwann cells meet, and membrane of axon remains exposed

Question 7

Schwann cells

Answer 7

found only in the PNS. myelinate (insulate) the membranes of the axons, significantly increase the speed of nerve impulse

Question 8

oligodendrocytes

Answer 8

myelinate axons of neurons in the CNS