______________ are the basic building blocks of the nervous system.    
 A. Axons   
 B. Dendrites   
 * C. Neurons   
 D. Nerves   
    

Glial cells provide structural support for __________________.    
 A. axons   
 B. nerves   
 C. dendrites   
 * D. neurons   
    

"While the most common form of communication between neurons is chemical, come neurons in the human nervous system communicate ________________."    
 A. via dendritic   
 B. via synaptic   
 * C. electrically   
 D. presynaptically   
    

"The most common form of communication between neurons is received and transmitted by means of ___________________."    
 * A. neurotransmitters.   
 B. action potentials.   
 C. synaptic clefts.   
 D. axons.   
    

________________ have three components: a cell body, dendrites, and an axon.    
 A. Neurotransmitters   
 B. Glial cells   
 C. Synaptic   
 * D. Neurons   
    

Neurons consist of three types:    
 A. sensory neurons, motor neurons, and glial neurons.   
 B. brain neurons, body neurons, and support neurons.   
 C. interneurons, communication neurons, and support neurons.   
 * D. sensory neurons, motor neurons, and interneurons.   
    

A ________________ is a type of neuron that conveys information about the environment, such as light and sound, from sense organs to the brain.    
 * A. sensory neuron   
 B. motor neuron   
 C. interneuron   
 D. synaptic neuron   
    

A ________________ is a type of neuron whose function is to communicate information between neurons.    
 A. sensory neuron   
 B. motor neuron   
 * C. interneuron   
 D. synaptic neuron   
    

What type of neuron conveys information to muscles causing them to relax or contract?    
 A. sensory neuron   
 * B. motor neuron   
 C. interneuron   
 D. synaptic neuron   
    

________________ is the main function of neuron.    
 * A. Communication   
 B. Metabolism   
 C. Elimination   
 D. Transmission   
    

The _______________ is the part of the neuron that contains the nucleus.    
 * A. cell body   
 B. myelin sheath   
 C. axon   
 D. synaptic gap   
    

The nucleus is located at the center of a ________________ and provides energy for the neuron to carry out its function.    
 A. glial cell   
 B. serotonin   
 C. action potential   
 * D. neuron   
    

The neuron receives data first through the ________________.    
 A. synaptic gap   
 B. axon   
 * C. dendrites   
 D. action potential   
    

The function of the myelin sheath is to    
 A. slow the speed of transmission.   
 * B. enhance the speed of transmission.   
 C. expose the axon to interference.   
 D. protect the neuron from antibodies.   
    

The stimulus threshold is the ________________ level of stimulation required to activate a neuron.    
 * A. minimum   
 B. maximum   
 C. neutral   
 D. committed   
    

Messages are gathered by the dendrites to the cell body and then transmitted along the axon in the form of a brief electrical impulse called    
 A. a communication impulse.   
 B. a nerve reaction.   
 * C. an action potential.   
 D. a reflexive impulse.   
    

Dr. Steward in the video described the centerpiece of the neuron, called the ________________, as the place where the entire metabolic activity takes place.    
 A. dendrite   
 B. axon   
 C. synaptic gap   
 * D. cell body   
    

______________ is a state in which a neuron is prepared to activate and communicate its message if it receives sufficient stimulation.    
 A. Action potential   
 * B. Resting potential   
 C. Emotional potential   
 D. Pain perception   
    

The space between neurons across which chemical messages pass is called the    
 A. chemical receptor site.   
 * B. synaptic gap.   
 C. axon-dendrite gap.   
 D. neurotransmitter.   
    

A neuron is sufficiently stimulated and an action potential occurs, or if not adequately stimulated, no action potential occurs; this rule is referred to as    
 A. transmission to transmission synape.   
 B. tip-of-tongue.   
 * C. the all-or-none law.   
 D. electrically charged particles.   
    

The video told the story of Dr. Susie Curtiss and her battle with a neurological disorder called dystonia. Dystonia is primarily associated with    
 A. problems with hearing development.   
 B. problems with sensory memory.   
 * C. difficulty in controlling motor functions and coordination.   
 D. an immature breathing structure.   
    

A white, fatty substance that insulates one axon from adjoining axons and increases the speed of neural transmissions is called    
 A. an axon.   
 B. dendrites.   
 * C. myelin sheath.   
 D. dopamine.   
    

In the video, Dr. Schweitzer explained that neurological disorders such as dystonia, multiple sclerosis, and Parkinson's disease result in    
 A. accidents or injuries.   
 B. childhood trauma.   
 * C. malfunctions in neural transmission.   
 D. nutritional deficiencies.   
    

Communication throughout the ______________ system occurs via neurons, which are specialized cells that receive and transmit information.    
 * A. nervous   
 B. central nervous   
 C. autonomic   
 D. somatic   
    

Endorphins have similar effects to opiates because they    
 A. can cause personality change.   
 B. can cause cellular damage.   
 * C. reduce the perception of pain and often produce a state of euphoria.   
 D. increase the perception of pain.   
    

Dr. Schweitzer points out in the video that ________________ is one of the most common neurological illnesses and affects approximately one person in 50 over the age of 50.    
 A. depression   
 B. dystonia   
 C. multiple sclerosis   
 * D. Parkinson's disease   
    

Dr. Susie Curtiss experienced a postsurgical complication as a result of the brain's ability to heal itself, a phenomenon called    
 A. neural balancing.   
 * B. plasticity.   
 C. the neurotransmitter effect.   
 D. electromagnetic equilibrium.