Biology Quiz: Immune Cells

Questions and Answers

What is the primary function of mobile cells in relation to blood?

To produce antibodies

To inhibit blood clotting and dilate blood vessels (correct)

To transport oxygen

To aid in digestion

Where are plasma cells typically located?

In the brain tissue

Within the bloodstream

In the intestinal walls (correct)

Close to lymph nodes

What transforms B-Lymphocytes into plasma cells?

Activation by foreign materials (correct)

Exposure to viruses

Contact with antibodies

Interactions with other white blood cells

What do antibodies do in the immune response?

Attach to foreign material to prevent harm Signup and view all the answers

Which of the following is NOT a characteristic of mobile cells?

They synthesize antibodies Signup and view all the answers

What two main components make up tissues?

Cells and extracellular matrix Signup and view all the answers

What is one of the main functions of the extracellular matrix?

To furnish mechanical support for the cells Signup and view all the answers

Which organ system is predominantly formed by only one type of tissue?

Central nervous system Signup and view all the answers

How is histology primarily conducted?

By the use of microscopes Signup and view all the answers

Which of the following is a component of the extracellular matrix?

Collagen fibrils Signup and view all the answers

In addition to mechanical support, how do cells interact with the extracellular matrix?

Cells produce matrix components and are influenced by them Signup and view all the answers

Study Notes

Mobile Cells

Characterized by a granule-filled cytoplasm.
Typically located near blood vessels.
Secrete heparin to prevent blood clotting.
Release histamine, which causes blood vessel dilation and increases blood flow.

Plasma Cells

Develop from B-lymphocytes when activated by foreign materials.
Function as small "factories" producing antibodies, which are critical for immune defense.
Antibodies bind to foreign substances, preventing further harm and assisting in their elimination.
Commonly found in the intestinal wall.

Histology Overview

Histology is the study of tissues and their arrangement to form organs.
The term derives from Greek: "histo" (tissue) and "logos" (study).

Tissue Composition

Tissues comprise two main components: cells and extracellular matrix (ECM).
Initially regarded as separate, the ECM plays a crucial role in tissue structure and function.

Extracellular Matrix (ECM)

The ECM includes various molecules, some organized into complex structures like collagen fibrils and basement membranes.
Functions of the ECM include:
- Providing mechanical support for cells.
- Facilitating nutrient transport to cells.
- Removing metabolic waste and secretory products.

Cellular Interaction

Cells not only synthesize ECM components but are also affected by them, indicating a dynamic relationship.

Organ Formation

Most organs consist of multiple tissue types working together, with the exception of the central nervous system, primarily made up of nervous tissue.

Microscopy in Histology

The microscopic size of cells and matrix components necessitates the use of microscopes for histological study.

Description

Test your knowledge on the role and characteristics of mobile cells and plasma cells in the immune system. This quiz covers the functions of heparin, histamine, and antibodies in response to foreign materials. Prepare to enhance your understanding of these vital immune components.