OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC TISSUES AND ORGANS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The body is attacked by a foreign invader. It has antigens on its surface that
|
|
alert the body to a non-self invader
|
|
|
alert the body to a self cell
|
|
|
destroy it once it is inside the cell
|
|
|
help the invader multiply rapidly
|
Explanation:
Detailed explanation-1: -The immune cells can recognize any bacteria or foreign substances as invaders. Immune cells, known as natural killer cells, begin to destroy the invaders with a general attack. Although this attack can kill some of the invaders, it may not be able to destroy all of them or prevent them from multiplying.
Detailed explanation-2: -Antigens are any substances that the immune system can recognize and that can thus stimulate an immune response. If antigens are perceived as dangerous (for example, if they can cause disease), they can stimulate an immune response in the body.
There is 1 question to complete.