Why is health called a dynamic state of physical, mental, spiritual, and social aspect of our body?

Why would one lymph node in the neck be swollen and not the other? what causes them to swell?

Achildren’s pain relief elixir contains 80. mg acetaminophen per 0.50 teaspoon. the dosage recommended for a child who weighs between 24 and 35 lb is 1.5 teaspoons. what is the range of acetaminophen doses, expressed in mg acetaminophen/kg body weight, for children who weigh between 24 and 35 lb

What region is located between the shoulder blades