Which of These Statements Does NOT Correctly Describe the Peripheral

question 35

Multiple Choice

Which of these statements does NOT correctly describe the peripheral chemoreceptors?

• A)They are stimulated whenever the arterial P_O2 falls below normal.
• B)They are weakly stimulated by a rise in arterial P_CO2.
• C) They are stimulated by an increase in arterial H⁺, which plays an important role in acid-base balance.
• D) They are located at the bifurcation of the common carotid arteries and in the aortic arch.

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Definitions:

Endoderm

The innermost layer of cells or tissue of an embryo in early development, giving rise to the lining of the gut and the associated structures.

Mesoderm

The middle layer of an embryo in early development, which will develop into muscles, bones, and circulatory systems.

Nervous System

In most invertebrates, consists of ganglia, sensory cells or sense organs, and networks of neurons. In vertebrates, consists of the brain, spinal cord, sense organs, and nerves; the body’s main regulatory system.

Endoderm

The innermost layer of cells or tissue of an embryo in early development, which gives rise to the lining of the digestive and respiratory systems.