The human immune system responds to an infection by producing _______, which cause many of the symptoms of sickness such as fever.

Question

Quizplus · Accepted Answer

The immune system responds to infections by producing endogenous pyrogens, which are chemicals that can induce fever and other symptoms of sickness. Exogenous pyrogens, which come from outside the body, can also cause fever, but they are not produced by the immune system. Thermogenins are proteins found in brown adipose tissue that can generate heat, but they are not directly involved in the immune response to infections. Therefore, the best choice is A) endogenous pyrogens.

The Human Immune System Responds to an Infection by Producing