Chapter 20, Problem 1RFT

The five figures to the right are labeled a through e. Fill in the blanks with the proper identification.

(a) —————-

(b)—————-

(d)—————-

(e)—————-

Summary Introduction

To review:

Identification of the given cell structures in the five figures.

Introduction:

The WBC (white blood cells) are the cells that provide defense from several pathogens and fight against foreign substances. These are of two types namely, granulocytes and agranulocytes. Granulocytes are basophils, eosinophils, and neutrophils. Agranulocytes are lymphocytes and monocytes.

Explanation of Solution

The structures of different cells are labeled as below:

Basophil

Lymphocyte

Neutrophils

Eosinophil

Monocyte

Basophils are the cells that assist the mast cells in the inflammation reaction. The cell is round and the nucleus is generally not visible due to the presence of large, dense purple granules in the cytoplasm. In the diagram also, the large dense purple–blue granules are clearly visible, which makes the cytoplasm difficult to be observed. It comprises heparin, which is an anticoagulant, prevents blood from clotting rapidly. Vasodilator histamine is also present in these cells, which are responsible for blood flow to tissues.

Lymphocytes are the cells of the lymphatic system that provides defense against specific toxins and pathogens. These cells have a large nucleus as well as the cytoplasm is very little. The cells present in the lymphatic system provides defense against certain toxins or pathogens.

Neutrophils are the cells that are phagocytic in nature and engulf cellular debris. The cell is round and nucleus resembles a series of beads. Large pale inclusions are present in the cytoplasm. These cells are round and nucleus usually resembles the series of beads. The cytoplasm present is usually large and consists of pale inclusions.

Eosinophil is a large cell with two lobes usually. Large granules are present in the cytoplasm. These granules stain orange–red with acidic dyes. The prime function is to attack anything, which carries antibody. It mostly plays an important role in fighting parasitic infections and leads to the suppression of inflammation.

Monocytes are very large cells having a kidney-bean-shaped nucleus. Abundant pale cytoplasm is present in the cell. It enters damaged tissue and produces histamine along with other chemicals.

Conclusion

Therefore, the structures of the different cells can be named as

a	Neutrophils
b	Eosinophil
c	Basophil
d	Monocyte
e	Lymphocyte