Question

The predominant WBC in ruminants is the

a. lymphocyte.
b. monocyte.
c. neutrophil.
d. eosinophil.

Answer 1

The predominant WBC in ruminants is the lymphocyte, which is responsible for the adaptive immune response. Neutrophils serve as phagocytic first responders in the innate immune response, and monocytes differentiate into macrophages that clear dead cells.

Step-by-step explanation:

The predominant white blood cell (WBC) in ruminants is the lymphocyte. Lymphocytes are part of the agranulocytes group, which also includes monocytes. These cells are responsible for the adaptive immune response, distinguished from granulocytes like neutrophils, eosinophils, and basophils, which typically act as first responders during injury or infection. Neutrophils are phagocytic and play a crucial role in the innate immune response by engulfing and destroying pathogens.

They also produce cytokines which further aid in the immune response. On the other hand, monocytes give rise to phagocytic macrophages that clean up dead and damaged cells, whether they are foreign or from the host animal.

Answer 2

The predominant white blood cell in ruminants is the lymphocyte, which is involved in the adaptive immune response. Neutrophils are also important as phagocytic first responders but are not the primary WBC in ruminants. The mentioned correct option in the final answer is 'a. lymphocyte'.

Step-by-step explanation:

The predominant white blood cell (WBC) in ruminants is the lymphocyte. Lymphocytes are responsible for the adaptive immune response, and they fall under the category of agranulocytes, which also include monocytes.

Monocytes can differentiate into macrophages and dendritic cells that are crucial in responding to infection or injury. On the other hand, neutrophils are phagocytic cells belonging to the granulocytes and act as first responders during injury or infection by engulfing and destroying pathogens.

Given these functions, it is important to note that different leukocytes (WBCs) have different roles in the immune response. Eosinophils and basophils, which are also granulocytes, facilitate the inflammatory response but are not the predominant WBCs in ruminants.