What helps protect your body against infections?

Your body has an amazing defence mechanism against infections called the immune system. Here are some key components of the immune system that work together to protect your body:

- *White Blood Cells:*

- Neutrophils: These are the most abundant type of white blood cells and act as the body's first line of defence against infection. They engulf and destroy foreign particles and pathogens.

- Lymphocytes: Lymphocytes are specialized white blood cells that play a crucial role in adaptive immune responses. There are two main types:

- B Cells: B cells produce antibodies that specifically target and help destroy antigens, which are foreign substances that can cause infection or disease.

- T Cells: T cells help identify and destroy infected cells and also facilitate the activation of B cells and other immune cells.

- *Natural Killer Cells:*

- These cells can detect and kill virus-infected cells or cancerous cells without prior exposure to those specific pathogens. They play a crucial role in innate immune responses.

- *Phagocytes:*

- These are cells that engulf and destroy foreign particles, microorganisms, and cell debris. They include neutrophils, macrophages, and dendritic cells.

- *Antibodies (also known as immunoglobulins):*

- Antibodies are proteins produced by B cells that specifically bind to and help neutralize pathogens or toxins.

- *Complements:*

- Complements are a group of proteins that work with antibodies to enhance the defence against infection. They help destroy pathogens by forming pores in their cell membranes, leading to cell death.

- *Cytokines:*

- Cytokines are signalling molecules that are produced by immune cells and help coordinate immune responses. They facilitate the communication between immune cells and regulate their activities.

In addition to these components, physical barriers like skin and mucous membranes, as well as the acidic environment of the stomach, help to prevent the entry of harmful microorganisms.

The immune system is constantly working to protect your body from a vast array of pathogens and threats. Its ability to adapt and remember past infections allows for quicker and more effective responses upon subsequent exposures.