Cells
Brain
Eyes
Action Impulse
Definitions
100
Area of nerve cell that receives impulses and information
What is dendrite
100
The brain and the spinal cord are the main components of this section of the nervous system
What is the central nervous system?
100
This is a dense packet of tissue that helps focus and image
What is the lens?
100
Pumps that re-establish the chemical/electrical gradient after an action impulse
What are the sodium-potassium pumps?
100
State of the neuron prior to the sending of a nerve impulse
What is resting potential
200
Type of axon which brings information into a structure
What is an afferent axon
200
This is responsible for heartbeat and breathing
What is the medulla oblongata
200
This is the name of the surface of the outside of your eye
What is the cornea?
200
The charge on the inside of a resting neuron
What is negative charge?
200
Difference in the electrical charge inside and outside the cell
What is electrical gradient
300
Types of cells which provide nutrients for nerve cells
What are neurological cells
300
Controls coordination and balance
What is the cerebellum?
300
This is the "jelly like" substance that fills the center of the eye
What is vitreous fluid?
300
An action impulse creates opens which element's gates
What is sodium
300
Decreasing of polarization towards zero
What is depolarization
400
What are small cells that surround nerves?
Schwann Cells
400
Responsible for sight
What is the occipital lobe?
400
These are specialized nerve cells that are sensitive to light
What are photoreceptor cells?
400
This is the state of a nerve after an action potential
What is refractory period?
400
Time after an impulse where you cannot produce an action potential
What is the absolute refractory period?
500
Dense lipid layers that insulate nerves
What is myelin?
500
Responsible for memory
What is temporal lobe
500
This is where the retina attaches to the back of the eye and the optic nerve
What is optic disc
500
Why can mylenated neurons conduct nerve impulses more quickly?
the action potential jumps from node to node
500
"jumping" of the action potential from node to node
What is saltitory conduction
M
e
n
u