Chapter 3 Flashcards
What do glial cells do?
Synchronize activity among nearby neurons.
The resting potential is
The voltage of an inactive neuron.
What causes the increase in voltage associated with the action potential?
The sodium ions entering the neuron have a positive charge.
The binding of a neurotransmitter to dendrite will result in
A change in the electrical potential of the postsynaptic neuron.
What describes reuptake?
Recycling the unused neurotransmitters.
Serotonin
Involved in mood. (Depression)
GABA
Main inhibitory neurotransmitter. (Anxiety disorder)
Norepinephrine
Controls emotional memory. (Mood disorders)
Glutamate
Main excitatory neurotransmitter. (Neuron death)
Damage to corpus callosum will lead to
Disruption of the communication between hemispheres.
The sympathetic controls what is often called
“Fight or flight”.
Parasympathetic controls
“Rest and digest”.
What limits the conclusions of family studies?
Individuals with higher levels of genetic overlap are often raised in more similar environments than individuals with less genetic overlap.
What is one major advantage that twin studies have?
Comparing sets of identical (monozygotic) and fraternal (dizygotic) twins allow researchers to minimize the effects on the environment.
What does it mean when researchers claim that the effects of genetics and environment are interactive?
A persons genes provide certain traits that affect how others respond to him or her. This affects the environment he or she experience.
