Increased activity in the neurons in the dorsal respiratory group is associated with:

A. high lung volume
B. high levels of CO2 in the blood
C. high levels of O2 in the blood
D. breath holding


ANS: B

Anatomy & Physiology

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Indicate whether the statement is true or false

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What happens to the heme when hemoglobin is broken down by the liver and spleen?

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Which sex tends to lose more bone mass with aging?

A.   Women B.   Men

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