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
You might also like to view...
Which sex tends to lose more bone mass with aging?
A. Women B. Men
Which of the following is consistent with homeostasis?
A. As blood pressure falls, blood flow to the heart decreases. B. As body temperature rises, sweating occurs to cool the body. C. When a person drinks large quantities of water, urine output decreases to raise blood volume. D. Decreases in blood pressure cause a corresponding decrease in heart rate. E. Elevated blood glucose levels cause insulin secretion to decline.
Melanin, hemoglobin, and carotene give color to the skin
Indicate whether the statement is true or false
What happens to the heme when hemoglobin is broken down by the liver and spleen?
A. It is broken down to form iron. B. It is secreted into bile. C. It is broken down to iron and bilirubin. D. It is considered a waste product and removed from the body.