Table 19-4 -Refer to Table 19-4. Consider the Data Above (In Billions

question 68

Multiple Choice

Table 19-4

-Refer to Table 19-4. Consider the data above (in billions of dollars) for an economy: Gross domestic product (in billions of dollars) for this economy equals

• A) $2,200.
• B) $2,100.
• C) $1,600.
• D) $1,400.

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Definitions:

Synaptic Knobs

Enlarged areas at the ends of axons that release neurotransmitters to transmit signals to other neurons, muscle cells, or glands.

Neurotransmitters

Substances that conduct messages across synapses from one nerve cell to another within the nervous system.

Motor Neurons

Specialized nerve cells responsible for transmitting impulses to muscles and glands.

Arachnoid Mater

One of the three layers (meninges) that surround and protect the brain and spinal cord, lying between the dura mater and the pia mater.