Quiz 2. Nervous System and Psychology Flashcards
They carry input from the senses to the brain and they sum up and transmit info.
Neurons
How many neurons do we have?
An estimate of 100 billion neurons
Which are the 3 types of neurons?
Sensory neurons, Motor neurons, Interneurons
They go from the brain out to your motor control.
Motor neurons
They take information from the environment, from the external world.
Sensory neurons
Connect different neurons without making contact with external world, through sensation, or through motor action
Interneurons
Parts of the neuron:
Dendrites, Soma, Axon, Axon terminals
The main body of a neuron or other cell
Soma
Neuron fibers that receive incoming messages
Dendrites
Fiber that carries information away from the cell body of a neuron
Axon
Structures at the end of the axon that form synapses with the dendrites and somas of other neurons
Axon terminals
The communication between neurons is completely…
chemical
The space between two neurons over which the message passes it is called:
synapse
Measurement of a synapse:
20 to 40 nm (nanometers)
Are the chemical that alter the activity in other neurons
Neurotransmitters
Regulates excitability, learning process, memory
Glutamate
Regulates sleep cycle, muscle functioning
Acetylcholine