Neural transmittion Flashcards
define neural transmisstion
the tranfer of information between neurons
define dendrite
the finger like cells found on the end of a neuron, they are receiving or input portions of a neuron
define axon
the portion of a nerve cell that carries nerve impulses away from the cell body
define cell body
the speherical part of the cell that contains the nucleus
define synapse
the gap between the neurons is called a synapse
steps to neural transmission
densdrites recive an chemical signal, which is then converted into an electrical signal. This is sent through the cell body donw to the axon. This electrical impulse travels donw the axon assisted by the mylin sheath until it reaches the axon terminal. This is where it is converted into a chemical signal in the form of a neurotransmitter to continue ots journey.
define neurotransmitters
chemicals that pass across the synapse triggering an action potential in the next neuron
effect of neurotransmitters
- seritonin
- dopamine
describe seratonin
it regulate mood, anxiety, appetite, sleep cycle and body tempertaure and low levels can lead to depression
describe dopamine
it creates a feeling of drive, motivation, liking, attention and pleausre. it is often released when eating chocolate, having sex, and taking drugs and low levels of it can lead to addiction, depression, and dementia.