Ban systems are working together in the following scenario:
You are exposed to a friend who has the common cold. When your body
detects this foreign entity, it uses the a hormone to signal the production
white blood cells to fight off the infection. The white blood cells are carried
throughout your body, and the invader is vanquished! Huzzah! Which three
systems weile working together to fight the cold? (choose 3)
Immune
Circulatory
Nervous
Muscular
Respiratory
Endocrine