Nervous System Crossword

Nerve cells which are specialized to react to physical and chemical changes
The brain and spinal cord
Cells made of myelin sheath which surround the axon
Acronym used to determine the order in which an action potential passes through neurons
Branched extensions of a neuron which recieve messages from other cells
The first stage of an action potential, in which K+ is inside the neuron and Na+ is outside
The second stage of an action potential in which Na+ enters the neuron
The third stage of an action potential, in which K+ leaves the neuron
The fourth stage of an action potential, in which too much K+ leaks out of the neuron
A period during an action potential in which the neuron cannot react to any stimuli
The final stage of an action potential in which a sodium-potassium pump switches the Na+ and K+
Chemical messenger which transmits siganals across the synapse
When an impulse "hops" from node to node on the axon to speed up the signal
The space between the Schwann Cells on the axon
A signal is sent from the stimulus towards the CNS
A signal is sent away from the CNS towards the motor neurons