Which of the following is an example of local control over breathing?
a. automated lung ventilation and lung perfusion adjustments maximizing O2 and CO2
exchange
b. the aortic bodies signaling an increase in breathing rate when blood pH is acidic
c. the interneuron groups of the pons refining the contractions involved with inhalation and
exhalation
d. the carotid bodies signaling an increase in breathing rate when O2 levels are low
e. the ventral group of interneurons signaling an increase in breathing rate and depth during
exercise
A
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Based on Figure 24.10, which of the following statements are true?
A. Neanderthals are more closely related to the French than to other groups. B. Neanderthals are more closely related to the Chinese than to other groups. C. Neanderthals are more closely related to the Melanesians than to other groups. D. Neanderthals are more closely related to the Nigerians than to other groups. E. Neanderthals are equally related to all non -African groups.
Microevolution involves ___
A. changes to the number of individuals in a population. B. changes in a population's gene pool. C. a change in the ratio of males to females in a population. D. the fixation of an allele over a long period of time.
What structure connects a muscle to a bone?
a. tendon b. ligament c. cartilage d. joint e. collagen
Which of the following water-borne pathogens are protozoans?
A. Hepatitis A B. Norwalk virus C. Giardia D. Vibrio E. Shigella