Lymphoid System Histology Questions and Answers

Lymphoid System Histology Assessment

1. White Pulp Composition

Which of the following cell types defines the white pulp in the spleen?

Incorrect Option Provided: B) Fibroblasts.

2. Tonsil Tissue Composition

Which of the following tissues is not found in the tonsils?

Incorrect Option Provided: A) Loose connective tissue.

3. Lymph Node Statement Evaluation

Which of the following statements about the lymph node is incorrect?

Incorrect Statement: E) The core area is characterized by fenestrated capillaries.

4. Thymic Epithelial Cell Function

Which feature and function is not peculiar to thymic epithelial cells?

Incorrect Function: B) Actively synthesize collagen and reticular fibers.

5. Hematotymic Barrier Function

What can be said regarding the hematotymic barrier?

Statement: A) It prevents the passage of antigenic molecules to the thymic parenchyma.

6. Lymphatic Circulation Characteristics

What can be stated with respect to the lymphatic circulation?

Statement: D) Lymph never mixes with blood anywhere in the body.

7. High B Lymphocyte Percentage

Which group of histological structures has a higher percentage of B lymphocytes?

Group: A) Bone Marrow and Spleen.

8. Peyer's Patches Description

What can be stated regarding Peyer's patches?

Statement: E) Their main constituent is a row of lymphoid tissue interspersed with diffuse lymphoid tissue.

9. Splenic Sinusoid Characteristics

What characterizes the splenic sinusoids?

Characteristic: A) They are formed by very long endothelial cells which are separated, allowing the passage of erythrocytes into the Cords of Billroth.

10. Spleen Functions

Which function does not correspond to the Spleen?

Incorrect Function: C) Selection of immunocompetent cells.

11. Basophilic Erythroblast Features

What characterizes the basophilic erythroblast?

Feature: D) Hemoglobin (Hb) synthesis is in sharp progress.

12. Myeloid Series Bacilliform Cell

What can be stated in reference to the myeloid series bacilliform cell (band cell)?

Statement: A) The nucleus has an indentation and occupies almost the entire cell volume.

13. Thrombopoiesis Regulation

What determines thrombopoiesis level?

Factor: B) Thrombosthenin synthesis level and DNA synthesis in megakaryoblasts and platelets.

15. Thymic Cortex Observation

What is possible to conclude in relation to the thymic cortex?

Conclusion: B) A high concentration of small lymphocytes is found in its deepest part.

16. Thymic Medulla Function

Which of the following explains the function of the thymic medulla?

Function: B) Abandonment of T lymphocytes from the body.

17. Secondary Lymph Node Stromal Cells

Which cells are stromal cells of the secondary lymph node?

Cell Type: D) Follicular dendritic cells.

18. Spleen Structure Relation

What can be stated in relation to the spleen?

Statement: B) Billroth cords are arranged at the level of the red pulp and are surrounded by the periarteriolar sheath.

19. Ellipsoid Association

The concept of the ellipsoid is associated with which structure?

• A) Splenic capillaries surrounded by a roof formed by macrophage cells.
• B) The splenic trabeculae introduced into the organ parenchyma.
• C) The lymph sinuses present in the lymph node, formed by reticular cells.
• D) The high cuboidal epithelium that corresponds to the endothelium of venules of lymph nodes.
• E) The covering lattice formed by macrophages and surrounding the periarteriolar sheath of the splenic white pulp.

20. Palatine Tonsil Definition

What are the palatine tonsils?

Definition: A) Several lymphoid structures arranged at the edge of the oral cavity and pharynx.