Chapter 4

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What are the brain's two major functions?
To control behaviour and to regulate the body's physiological processes
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The central nervous system (CNS) consists of the ... and three major divisions of the brain: ...
Spinal cord. The brain stem, the cerebellum and the cerebral hemispheres
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What covers the cerebral hemispheres?
The cerebral cortex
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What is the cerebral cortex wrinkled by?
Fissures and gyri
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The brain communicates with the rest of the body through the ...., which includes the .... and ....
Peripheral nervous system. Spinal nerves, cranial nerves
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The basic element of the nervous system is the ...
Neuron
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Neurons are assisted in their tasks by ...
Glia
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Glia provides physical ..., aid in the ... of the nervous system, provide neurons with the ... they need, remove ... chemicals, provide ... for ... and protect neurons from ...
Support, development, chemicals, unwanted, myelin sheaths, axons, infection
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One neuron communicates with another (or with ... or ...) by means of ...
Muscle, gland cells, synapses
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A synapse is the junction of the ... of the ... with the ... of the ....
Terminal button, presynaptic neuron, membrane, postsynaptic neuron
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Synaptic communication is ...; when an ... travels down an ..., it causes a ... to be released by the ...
Chemical, action potential, axon, transmitter substance, terminal buttons
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An action potential consists of a brief change in the ... of the axon, produced by a brief ... into the axon followed by a ...
Electrical charge, entry of positively charged sodium ions, exit of positively charged potassium ions
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Ions enter the ... through ..., and ... eventually ... the proper concentrations of ions ... and ... the cell
Axon, ion channels, ion transporters, restore, inside, outside
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Molecules of the transmitter substance released by terminal buttons either ... or ... the ...of the ...
Excite, inhibit, firing, postsynaptic neuron
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The combined effect of excitatory and inhibitory synapses on a particular neuron determine the ... of that neuron
Rate of firing
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Other cards in this set

Card 2

Front

The central nervous system (CNS) consists of the ... and three major divisions of the brain: ...

Back

Spinal cord. The brain stem, the cerebellum and the cerebral hemispheres

Card 3

Front

What covers the cerebral hemispheres?

Back

Preview of the front of card 3

Card 4

Front

What is the cerebral cortex wrinkled by?

Back

Preview of the front of card 4

Card 5

Front

The brain communicates with the rest of the body through the ...., which includes the .... and ....

Back

Preview of the front of card 5
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