Which of the following must be isotonic?
Ophthalmic preparations
Otic preparations
Oral inhalation preparations
External medications
Ophthalmic preparations
Rationale: Ophthalmic preparations are required to be isotonic. An isotonic solution should have tonicity equal to that of sodium chloride 0.9%.
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According to the clonal selection theory, lymphocytes are
a. Activated if an antigen binds to its receptors b. Activated if an immunglobulin binds to its receptors c. Eliminated if they are bound to antibody d. Eliminated if they react to self antigens
If leads I and aVF are both negative, the axis is indeterminate
Indicate whether the statement is true or false
Trainers who work with contact sports such as football should be vaccinated against hepatitis B
Indicate whether the statement is true or false
Bitter taste is primarily mediated by the (cranial nerve name and number) _________________________ nerve
Fill in the blank(s) with correct word