The body's third line of defence

What is the function of third line of Defence in the body? One type, the T cells, mature after having first migrated from the bone marrow to the thymus gland. The other type, B cells, migrate to and then mature in either the bone marrow or in the foetal liver or spleen. These are three lines of defense , the first being outer barriers like skin, the second being non-specific immune cells like macrophages and dendritic cells, and the third line of defense being the.

Most antigens are proteins that serve as the stimulus to produce an immune response.

Specificity of 3rd Line of Defense 1. The second line of defence is a group of cells, tissues and organs that work together to protect the body. The cells involved are white blood cells (leukocytes), which seek out and destroy disease-causing organisms or substances. This is the immune system. There are different types of leukocytes. Start studying Human Body - three lines of defense.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. The cells of the immune The cells of the immune system are able to distinguish between different kinds of pathogens.

A second line of defense is housed within the body : a finely tuned immune system that recognizes and destroys foreign substances and organisms that enter the body. THE THIRD LINE OF DEFENSE: INTERNAL AUDIT Internal auditors provide the governing body and senior management with comprehensive assurance based on the highest level of independence and objectivity within the organization. It involves non-specific responses to pathogens that have invaded the internal environment of the organism. When a microbe invades the body , the immune system makes antibody against it. It is then a battle between the antigen ( intruder) against the antibody (immune system).

A consequence of an HIV infection. A notable difference between the third line and the first two lines of defense. An inference made as a result of a high lymphocyte count. The skin provides a formidable physical barrier to the entry of pathogens.

Healthy skin is rarely penetrated by microorganisms. Certain chemical secretions are produced by skin that inhibit growth of bacteria and fungi. Tears, mucus and saliva also help wash bacteria away. It can not remember past infections. These cells also remember this antigen the next time they see it and kill it even faster.

These functions provide the oversight and the tools, systems and advice necessary to support the first line in identifying, managing and monitoring risks. To do this the are lines of defence.

The first consists of barriers such as the skin. The third line of defence is provided by the internal audit function. If a foreign agent penetrates the non-specific barriers, there is a third line of defense available – the specific immune response. The specific immune response is a mechanism that is activated by the presence of pathogens and foreign substances.

These cells fight the yeast for the same nutrients, and because they do so effectively, they are able to keep the yeast in check. The fourth and final barrier to yeast infections is your general state of health. Although it is not directly a part of the Immune system, the skin is the first line of defense of the body against foreign agents. Body surfaces exposed to the external environment include the skin and mucous membrane s , i. When it gets to the third line of defense, antibodies are created which helps T and B cells target the enemy. A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.

BODY DEFENCE MECHANISM. Second Line: killing the pathogen that enter our body by phagocytic action. Third line: Killing the pathogen by antibodies action.