The sympathetic nervous system:
a. is called the thoracolumbar system
b. releases norepinephrine from its preganglionic axon
c. is called the craniosacral system
d. both A and B above
a. is called the thoracolumbar system
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Students were asked to identify the type of muscle tissue that makes up the arrector pili, a structure that moves the hair relative to the skin. Which of the following correctly identified the muscle tissue type?
A. Hannah stated that it is skeletal muscle, eliminating cardiac muscle because it is not located in the heart and smooth muscle because it is not part of blood vessels. B. David stated that it is smooth muscle, eliminating cardiac muscle because the tissue is not located in the heart and skeletal muscle because it is not under voluntary control. C. Sally stated that it is cardiac muscle, eliminating smooth muscle because it is not associated with blood vessels and skeletal muscle because it is not attached to bones.
Define acidemia and alkalemia
A) Acidemia is when pH decreases below 4.8 and alkalemia is when pH increases above 11.4. B) Acidemia is when pH increases above 7.45 and alkalemia is when pH decreases below 7.35. C) Acidemia is when pH increases above 11.4 and alkalemia is when pH decreases below 4.8. D) Acidemia is when pH decreases below 7.35 and alkalemia is when pH increases above 7.45. E) Acidemia is when pH decreases below 1 and alkalemia is when pH increases above 13.
Name the term for the test that evaluates urine
What will be an ideal response?
Callopistes maculatus, the dwarf tegu, is a teiid lizard that occurs in desert habitats in Chile
A study of its daily activity cycle in summer showed a decrease in activity during midday, although the body temperatures of the lizards that were active in midday were not different from the body temperatures of lizards that were active in the morning or afternoon. That observation is not consistent with the hypothesis that midday temperatures are so high that the lizards must seek shelter to avoid overheating. Apparently dwarf tegus in this habitat are able to maintain their normal activity body temperatures throughout the day. What alternative hypothesis can you suggest to account for the decrease in activity of dwarf tegus in midday? If your hypothesis is correct, what additional concern does it suggest about the potential effect of global climate change on lizards?