The innate immune system is comprised of
A)physical barriers only.
B)cellular components only.
C)complement proteins only.
D)physical barrier,cellular components,and complement proteins.

Question

Quizplus · Accepted Answer

The innate immune system is comprised of physical barriers, cellular components, and complement proteins, all of which work together to provide rapid, non-specific defense against pathogens. Physical barriers include the skin and mucous membranes, which prevent the entry of pathogens into the body. Cellular components include various types of white blood cells, such as neutrophils and macrophages, which can recognize and phagocytize (engulf and destroy) invading pathogens. Complement proteins are a group of more than 20 different proteins that can coat or puncture pathogens, marking them for destruction by other components of the immune system.

The Innate Immune System Is Comprised of