During sterile injury or infection, the innate immune system produces cytokines as part of the innate immune response. Molecules such as the cytokines tumour necrosis factor and interleukin-1 as well ...

Part of Biology (Single Science) The human body - Staying alive A reflex action follows this general sequence and does not involve the conscious part of the brain. This is why the response is so fast.

A reflex action follows this general sequence and does not involve the conscious part of the brain. This is why the response is so fast. Receptor in the skin detects a stimulus (the change in ...