crash course chapter 2 video quiz notes Flashcards
(30 cards)
everything psychological is
biological
neurons or ___
nerve cells
brain is made of ____ neurons
billions
4 different types of neurons
interneuorn,
sensory neuron
motor neuron
pyramidal cell
3 basic parts of neuron
soma (cell body), dendrites, axon
the soma (cell body) is the neuron’s
life support
the dendrites do what
receive messages from other cells
the axon does what
transmits electrical impulses to other parts of the body
axon is sometimes covered by a layer of fatty tissue called the
myelin sheath
the myelin sheath does what
speeds up the transmission of messages
when the myelin sheath degrades, what disease onsets
multiple sclerosis
a chronic, typically progressive disease involving damage to the sheaths of nerve cells in the brain and spinal cord
multiple sclerosis
when do neurons transmit signals
when stimulated by sensory input or triggered by neighboring neurons
contact points between neurons are called
synapses
the synapses are on the
dendrites
the gap between the axon and the synapse
synaptic gap
natural, opiatelike neurotransmitters linked to pain control and pleasure
endorphins
rev neurons up
excitatory neurotransmitters
chill neurons out
inhibitory neurotransmitters
a majory inhibitory neurotransmitter
gaba (gamma-aminobutyric acid)
enables muscle action, learning, and memory
acetylcholine
influence movement, learning, attention, and emotion
dopamine
progressive neurological deterioration that can occur in middle or old age, due to generalized degeneration of the brain
alzheimer’s
a long-term psychiatric disorder of a type involving a breakdown in the relation between thought, emotion, and behavior.
schizophrenia
