One of the main dangers of burns is
A. hypocalcemia, as blood ion levels are dramatically altered.
B. hyperthermia, as temperature regulation is very compromised.
C. dehydration, as water can escape from the body.
D. respiratory infection, as body defenses are concentrated superficially.
Answer: C
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Which of the following would be an example of chemotaxis?
A. A white blood cell can move into and out of blood vessels. B. Platelets are attracted to the rough surface of damaged blood vessels. C. Red blood cells move due to pressure gradients generated by the heart. D. A white blood cell moves toward an injury site due to the release of certain chemicals by injured cells.
Besides containing valves, cite another major difference between the arterial and venous systems
What will be an ideal response?
Which is TRUE regarding diffusion?
A. It depends upon the random motion of molecules. B. It results in net movement of molecules from regions of low concentration to regions of high concentration. C. It is the principal mechanism by which molecules are moved over large distances in the body. D. It requires energy in the form of ATP. E. It requires integral membrane proteins to occur.
Which two tracts represent direct motor pathways?
corticobulbar corticospinal reticulospinal rubrospinal tectospinal