Which of the Following Statements Are True of the Nervous

question 115

Multiple Choice

Which of the following statements are true of the nervous regulation of heart rate? (Read carefully and select all of the correct statements.)

• A)The cardiac centers are in the medulla of the brain.
• B)Only the sympathetic nervous system has nerves to the heart muscle.
• C)Heart rate changes in response to changes in blood pressure or blood gas levels.
• D)Sympathetic nerve fibers to the heart are part of the vagus nerves.
• E)The neurotransmitter norepinephrine decreases heart ratE.
• F)The heart generates its own beat,but the neurotransmitter acetylcholine can increase the rate.

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Definitions:

Physical Capital

The stock of equipment and structures that are used to produce goods and services.

Capital Per Worker

The amount of capital (tools, machinery, and equipment) available per employee, affecting the productivity and efficiency of labor.

Output Per Worker

A measure of labor productivity calculated by dividing total output by the number of workers.

GNP

Gross National Product, which is the total value of all goods and services produced by the residents of a country within a specific time period.