Question

this exam is 60 questions and you will have 90 minutes to complete this exam. this exam will cover vessels/pressure, and lymphatics, and immune system. question 27 1.67 pts iga is primarily found on the surface of b - lymphocytes. in the thymus, spleen, and lymph nodes. in lymph. in blood. in external secretions such as tears, saliva, and mucus.

Explanation:

IgA is an antibody that provides primary immune defense at mucosal surfaces. It is abundant in external secretions like tears, saliva, and mucus which line the body's openings and protect against pathogens.

Answer:

in external secretions such as tears, saliva, and mucus.