Final answer:
White blood cells produced in the trabecular area of long bones are the cells responsible for fighting infection in the human body. They come in various types, each with specialized functions in the immune system.
Step-by-step explanation:
The correct option is B:
The blood cells responsible for fighting infection are the White Blood Cells (b). They are produced in the trabecular area of long bones, among other sites, and play a crucial role in the immune response.
The human body has a sophisticated defense mechanism that primarily involves white blood cells for combating infections. These cells are derived from hematopoietic stem cells located in the bone marrow. As a component of the immune system, white blood cells come in various types, such as neutrophils, monocytes, lymphocytes, eosinophils, and basophils, each with specialized functions. Neutrophils and monocytes, for instance, are professional phagocytes that engulf and digest pathogens. Lymphocytes, which include B cells and T cells, play roles in the adaptive immune response, with B cells producing antibodies and T cells carrying out cellular immune responses.
Unlike red blood cells, which are tasked with carrying oxygen to the body's tissues, or platelets, which facilitate blood clotting, white blood cells serve a protective function. These white blood cells are also able to move through the endothelial layer of blood vessels to reach sites of infection or inflammation. Macrophages, which are a kind of white blood cell, also contribute to the immune response by removing aged and damaged erythrocytes, among other tasks.
The question highlights the role of specific blood cells involved in the immune response. Different blood cells have distinct responsibilities, but when it comes to fighting infections, white blood cells are the frontline warriors.