Exam 13: Body Defense Mechanisms

The eye is a warm,moist environment favored by many harmful bacteria.Nevertheless,eye infections are relatively rare.Why is this?

What are the three strategies for defending against foreign organisms,cells,or molecules?

A (n)________ is an overreaction by the immune system to an antigen.

Abdul,who is 6 years old and beginning his first day of school,comes into his classroom where some other children are eating peanuts.Within a few minutes he complains of dizziness and seems to be struggling to breathe.You suspect ________.

According to preliminary tests Alexandra has liver cancer but the mass is inoperable and hard to localize.In order to administer x-ray beam therapy safely and effectively,the doctors must find the exact location of the cancer.Which of the following methods would be best in this situation?

Match each definition in the first column to the correct term in the second column. -If you had none of these cells,you could no longer make antibodies.

Antibodies do all of these things except ________.