The group of protective plasma proteins you are referring to is known as the **complement system**. It is a vital part of the immune system and consists of a series of small proteins found in blood plasma. These proteins are designated by the letter "C" followed by a number, such as C1, C2, C3, and so on.

### Roles of the Complement System:
1. **Opsonization**: Complement proteins can bind to pathogens, marking them for destruction by phagocytes.
2. **Chemotaxis**: Certain complement proteins recruit immune cells to the site of infection or inflammation.
3. **Lysis of Pathogens**: The complement system can form a membrane attack complex (MAC) that creates pores in the membranes of pathogens, leading to their lysis.
4. **Enhancing Antibody Responses**: Complement can interact with antibodies to enhance the body’s immune response.

The complement system can be activated via three pathways: the classical pathway, the lectin pathway, and the alternative pathway, each playing a significant role in immunity and inflammation. This complex interplay contributes significantly to the body’s defense mechanisms against infections and contributes to the inflammatory response.

Question

The group of protective plasma proteins you are referring to is known as the **complement system**. It is a vital part of the immune system and consists of a series of small proteins found in blood plasma. These proteins are designated by the letter "C" followed by a number, such as C1, C2, C3, and so on.

### Roles of the Complement System:
1. **Opsonization**: Complement proteins can bind to pathogens, marking them for destruction by phagocytes.
2. **Chemotaxis**: Certain complement proteins recruit immune cells to the site of infection or inflammation.
3. **Lysis of Pathogens**: The complement system can form a membrane attack complex (MAC) that creates pores in the membranes of pathogens, leading to their lysis.
4. **Enhancing Antibody Responses**: Complement can interact with antibodies to enhance the body’s immune response.

The complement system can be activated via three pathways: the classical pathway, the lectin pathway, and the alternative pathway, each playing a significant role in immunity and inflammation. This complex interplay contributes significantly to the body’s defense mechanisms against infections and contributes to the inflammatory response.

Knowee AI · Accepted Answer

The group of protective plasma proteins you are referring to is known as the **complement system**. It is a vital part of the immune system and consists of a series of small proteins found in blood plasma. These proteins are designated by the letter "C" followed by a number, such as C1, C2, C3, and so on.

### Roles of the Complement System:
1. **Opsonization**: Complement proteins can bind to pathogens, marking them for destruction by phagocytes.
2. **Chemotaxis**: Certain complement proteins recruit immune cells to the site of infection or inflammation.
3. **Lysis of Pathogens**: The complement system can form a membrane attack complex (MAC) that creates pores in the membranes of pathogens, leading to their lysis.
4. **Enhancing Antibody Responses**: Complement can interact with antibodies to enhance the body’s immune response.

The complement system can be activated via three pathways: the classical pathway, the lectin pathway, and the alternative pathway, each playing a significant role in immunity and inflammation. This complex interplay contributes significantly to the body’s defense mechanisms against infections and contributes to the inflammatory response.

A group of protective plasma proteins designated by the letter C and a number are all part of the system.

Question

A group of protective plasma proteins designated by the letter C and a number are all part of the _____ system.

Solution

Roles of the Complement System:

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