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2. Test of Essential Academic Skills - Wikipedia

   en.wikipedia.org/wiki/Test_of_Essential_Academic...

   The Test of Essential Academic Skills (TEAS Test) is a standardized, multiple choice entrance exam for students applying to nursing and allied health programs in the United States. [1] It is often used to determine the preparedness of potential students to enter into a nursing or allied health program.

3. Respiratory tract antimicrobial defense system - Wikipedia

   en.wikipedia.org/wiki/Respiratory_tract...

   The respiratory tract antimicrobial defense system is a layered defense mechanism which relies on components of both the innate and adaptive immune systems to protect the lungs and the rest of the respiratory tract against inhaled microorganisms.

4. Development of the respiratory system - Wikipedia

   en.wikipedia.org/wiki/Development_of_the...

   Development of the lower respiratory system. Respiratory development in the embryo begins around week 4. Ectodermal tissue from the anterior head region invaginates posteriorly to form olfactory pits, which fuse with endodermal tissue of the developing pharynx. An olfactory pit is one of a pair of structures that will enlarge to become the ...