#1
What structure is a mass of neurons that controls your entire body's functions?
Brain
Everything EXCEPT the brain and spinal cord.
Peripheral nervous system (PNS)
What travels faster? Electrical or chemical signals?
Electrical
The small gap between neurons where neurotransmitters are exchanged is known as the.
Synapse
What division of the nervous system is responsible for “automatic” functions, such as regulating temperature and pH?
Autonomic
What part of the neuron is responsible for receiving incoming stimuli from previous neurons?
The period during an action potential when it is physically impossible to stimulate the neuron again.
Refractory period
Term when the neurons membrane potential becomes more positive.
Depolarization
Which division of the nervous system is responsible for interpreting the external environment?
Somatic
Sensory neurons that travel towards the CNS are referred to as...
DOUBLE JEOPARDY!!!
Afferent
Motor neurons that travel away from the CNS are referred to as...
Efferent
What is the resting potential value of a neuron that is ready to transmit an electrical impulse?
-70 mV
Which type of glial or “support” cell is responsible for acquiring nutrients for neurons?
Oligodendrocytes
During a “fight-or-flight” response, what division of your nervous system is primarily activated?
Sympathetic
Which glial cell forms the myelin sheath on a neuron’s axon?
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Schwann cell
What is the threshold stimulus (or the “all-or-nothing”) value for an action potential to occur?
DOUBLE JEOPARDY!!!
-55 mV
Cerebrospinal fluid is produced by which glial cell?
DOUBLE JEOPARDY!!!
Ependymal cells
What part of the cell membrane is responsible for establishing the resting potential for a neuron?
Na+/K+ Pump
What does Calcium (Ca2+) do in the neuron?
Triggers the release of neurotransmitters
Which type of glial cell supplies a structural support which forms the blood brain barrier to protect from microbial invasion?
Astrocytes