8.2nd and 3rd Line Defenses:The immune system

Question 1

Define the immune system

Answer 1

The immune system is a set of organs, tissues and cells which protect the body from disease causing pathogens

Question 2

What are the two type of immune cells

Answer 2

Phagocyte cells//belong to non specific immune system, they destroy the pathogen
Lymphocyte cells//belong to specific immune system, they recognize the pathogen

Question 3

Give 2 examples of 2 lymphatic organs

Answer 3

Red bone marrow// spongy tissue found in bones where all blood cells are produced
Tonsils//lymphoid tissue that protect entry of foreign substances to the respiratory tube