★ Skin Structure Quiz
Which of the following is not a function of the skin
A. Protection
B. Temperature
C. Excretion
D. Transportation
Select your answer:
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Physiology › ViewWhich statement regarding the sinoatrial node is TRUE?
A. it is innervated by the vagal nerve
B. SA node reaches threshold faster than other heart structures
C. is located in the right atrial wall near the opening of the superior vena cava
D. it does not have a stable resting potential
E. all of the answers
Infectious Diseases & the WHO › View
What was the biggest source of contamination of fresh drinking water in early civilizations?
A. Animals living close to people
B. Lack of a water source (desert conditions)
C. Wells that are not dug deep enough
D. Aqueducts were not built high enough