Chapter 3 Quiz
________ is the electrical signal that typically moves from the cell body down the axon to the axon terminals.
action potential
The Peripheral Nervous System has two major subdivisions. They are the:
autonomic and somatic nervous systems
Each neurotransmitter must fit into the receptor site in a:
lock and key fashion
Axons may be coated with a fatty substance known as the:
myelin sheath
Which brain lobe controls one's sense of vision?
occipital
The tragic case of Phineas Gage showed that ___was governed by the_____.
personality/frontal lobe
Wernicke's area is located in the_____lobe.
temporal
The ________ of a neuron contain ________ that house neurotransmitters, the chemical messengers of the nervous system.
terminal buttons; synaptic vesicles
Which system produces hormones?
Endocrine System
SSRI drugs work by:
blocking the reuptake of serotonin
The brain and spinal cord comprise the:
central nervous system
Which is the correct order?
dendrites, cell body, axon, terminal buttons, synapse
Parkinson's disease, a progressive nervous system disorder, is associated with low levels of_____.
dopamine
_____ scans create pictures of the living, active brain.
positron emission tomography (PET)
Which is not one of the lobes of the brain?
regional
Once a neurotransmitter has done its job it is pulled back into the terminal buttons. This process is termed:
reuptake
You can feel a pen in your hand. This is because of:
sensory nerves
Person Z encounters a snake in his driveway. His heart rate and blood pressure increase and his pupils dilate. Whoa! Which nervous system is responsible for these physiological changes?
sympathetic
The space between two neurons is called the ________.
synapse
Neurons are the central building blocks of the nervous system, _____ strong at birth.
100 billion