BioPsychCh2

Receive info and transmit it to other cells

Structure that separates the inside of the cell from the outside environment

Has 2 layers of fat molecules that are free to flow around one another

Contains chromosomes

Performs metabolic activity providing energy for the cell

Sites at which the cell synthesizes new protein molecules

Some is in the center of the spinal cord.

Receives excitation from other neurons through its dendrites and conducts impulses along its axon to a muscle

Specialized at one end to be very sensitive to a particular type of stimulation like light, sound or touch

Receives info from neurons. The greater the surface area the more info it can receive

nucleus, ribosomes, mitochondria,

Information sender of the neuron, conveys an impusle toward other nuerons or an organ/muscle

Point from which the acon releases chemicals that cross through the junction between one neuron and the next

Brings information into the structure

Carries information away from a structure

Do not transmit info over long distances like neurons, but they exchange chemicals with adjacent neurons

Helps synchronize the activity of the axons which lets them send messages in waves

Very small cells, remove waste materials

In the brain and spinal cord

Build myelin sheaths in that surround and insulate certain vertebrate axons

Guide the migration of neurons and their axons and dendrites during embryonic development

Difference in electrical charge between the inside and outside the cell

Difference in electrical charge between 2 locations

Neuron inside is (-)

Transports 3 sodium ions OUT of the cell and transports 2 potassium ions IN

Difference in distribution of ions across the membrane

Ex: Sodium is more likely to enter the cell because it more concentrated outside than inside

Increased polarization

Amplitude and velocity of an action potential are independent of the intensity of the stimulus that initiated it

Insulating material made of fats and proteins

Jumping potentials from node to node

Conserves energy

Difference in electrical charge between inside/outside of the cell

Difference in voltage in a resting neuron

• Are in the PNS
• It's possible to reattach limbs