Nervous system 1

Neurontransmission

________: transmission of information across a synapse ex: transfer of information from one neuron to another neuron or cell.

Tract

________: collection of axons in central nervous system that have a common origin and destination.

Neural stem cells

________ are present in the adult nervous sytem but are normally inactive.

Cell body

________: between dendrites and axon.

Cortex

________: collection of neurons that form a thin sheet.

Ganglion

________: collection of neurons in peripheral nervous system.

Interneurons

________: form connections with other neurons- most common type of neurons.

Nucleus

________: distinguishable mass of neurons.

Dendrites

________: dendrite is greek for "tree, "receive information from other neurons.

peripheral nervous system

Regulate the environment around neurons in the ________.

Cell body

________ or soma: contains the cell nucleus and other organelles.

typical neurons cannot divide so they cannot be replaced if die through injury or disease

lack centrioles

cell body or soma

contains the cell nucleus and other organelles

axon hillock

start of the axon

axon terminal

end of axon and site where axon passes information to other neurons or cells

dendrites

dendrite is greek for "tree", receive information from other neurons

sensory neurons

deliver information from sensory receptors in the body to the central nervous system

motor neurons

deliver information about movement from the central nervous system to the body (effector)

cortex

collection of neurons that form a thin sheet

nucleus

distinguishable mass of neurons

ganglion

collection of neurons in peripheral nervous system

tract

collection of axons in central nervous system that have a common origin and destination

nerve

bundle of axons usually in the peripheral nervous system (optic nerve is the only nerve in the central nervous system)

membrane potential

the potential difference of the cells interior relative to its surroundings