The nurse, learning about malaria, discovers that the ...

[D2AR0N]

The nurse, learning about malaria, discovers that the transmission of malaria occurs when what is injected into the human body by the infected mosquito?
 
  A) Sporozoites
  B) Gametocytes
  C) Schizonts
  D) Merozoites

Question 2

The student nurse asks the instructor why a patient with a central nervous system infection is receiving antibiotics that will not cross the bloodbrain barrier. What is the instructor's most correct response?
 
  A) A severe infection alters the bloodbrain barrier to allow the drug to cross.
  B) A medication that is water soluble is more likely to cross the blood-brain barrier.
  C) Antibiotics are the exception to the bloodbrain barrier and cross easily.
  D) An infection that spreads outside the central nervous system helps drugs cross the barrier.

[katara]

Answer to Question 1

A
Feedback:
Gametocytes are sucked with the blood from an infected person by the mosquito. The gametocytes mate in the stomach of the mosquito and produce a zygote that goes through several phases before forming sporozoites (spore animals) that make their way to the mosquito's salivary glands. The next person who is bitten by that mosquito is injected with thousands of sporozoites. Schizonts are the primary tissue organisms resulting from asexual cell division and reproduction after the sporozoites are introduced into the body. Merozoites are then formed from the primary schizonts.

Answer to Question 2

A
Feedback:
Effective antibiotic treatment can occur only when the infection is severe enough to alter the bloodbrain barrier and allow antibiotics to cross. Lipid-soluble, not water-soluble, medications cross the bloodbrain barrier more easily and most antibiotics are lipid soluble, so they are not the exception. No matter where the infection originates, drugs must cross the bloodbrain barrier to treat central nervous system infections.

[D2AR0N]

Excellent

[peter]

TYSM