Psychology - Chapter 3 Quiz
________ is the electrical signal that typically moves from the cell body down the axon to the axon terminals.
action potential
Which structure is covered by a fatty layer of insulation?
axon
The brain contains ________ of interconnected neurons and glia.
billions
Psychological researchers study genetics in order to better understand the ________ that contributes to certain behaviors.
biology
Which structure connects the right and left hemispheres of the brain?
corpus collosum
________ is a neurotransmitter that may be linked to schizophrenia.
dopamine
The endocrine system consists of a series of glands that produce chemical substances known as ________.
hormones
In a resting state, sodium (Na+) is at a higher concentration outside the cell and potassium (K+) is more concentrated inside the cell. During an action potential, the sodium levels ________ inside the cell.
increase
Sensory and motor neurons of the ________ nervous system are associated with activities traditionally thought of as conscious or voluntary.
somatic
The central nervous system consists of the brain and the ________.
spinal cord
The ________ nervous system is responsible for responses such as pupil dilation, increased heart rate, and increased respiration.
sympathetic
The space between two neurons is called the ________.
synapse
The ________ of a neuron contain ________ that house neurotransmitters, the chemical messengers of the nervous system.
terminal buttons; synaptic vesicles
Which of the following senses is associated with the temporal lobe?
audition
Which brain lobe controls one's sense of vision?
occipital
Phineas Gage suffered damage to his frontal lobe. This ultimately resulted in changes in his:
personality
The two major divisions of the nervous system are the ________ and ________.
central; peripheral nervous systems
A ________ scan involves taking a number of x-rays of a particular section of a person's body or brain.
computerized tomography (CT) scan
Selective serotonin reuptake inhibitors (SSRIs) are drugs commonly prescribed for ________.
depression
Once a neurotransmitter has done its job it is pulled back into the terminal buttons. This process is termed:
reuptake