Lymphatic system

their job is to trap and remove bacteria or other foreign pathogens entering the throat

it's most important function is to destroy worn out red blood cells and returns some of their breakdown products to deliver

A condition where the tonsil is congested with bacteria and become red, swollen and sore.

are inward extension of cortical tissue that contains both b cells t cells.

circulate continuously between the blood, lymph nodes, and lymphatic stream performing their surveillance role.

collection of lymphocyte within cortex

outer parts of the node

is a soft organ located in the left side of the abdominal cavity just beneath the diaphragm that girls around the anterolateral aspect of the stomach

arise from the red bone marrow but then migrate to the lymph nodes and other lymphoid organs, where they reproduce furder.

dark staining center of the node

Help protect the body by removing foreign material such as bacteria and tumor cells from the lymphatic stream.

engulf and destroy bacteria, viruses, and other foreign substance in the lymph before it is returned to the blood.

drains lymph from the right arm and the right side of the head and thorax

receives lymph from the rest of the body.

it varies in shape and size but most are kidney shaped, 1 centimeter long and buried in the connective tissue that surrounds them.

form a one way system, and lymph(the interstitial fluid pag sud na sa ,vessels) flows only toward the heart.

weave between the tissue cells and blood capillaries in the loose connective tissue of the body and absorb the leaked fluid.

swelling, excessive of this impairs the ability of cells to make changes with the interstitial fluid.

to form an elaborate drainage system that picks up this excess interstitial fluid

which resembles tonsils are found in the wall of the distal small intestine

act as a sentinel to protect the upper respiratory and digestive tracts from the constant attacks of foreign matter entering those activities

What are the lymphoid organs that part of the collection of small lymphoid tissues or mucosa associated lymphoid tissue

in which three regions of the body are the lymph nodes most densely located

highly specific resistance to disease.

fight invaders that get past the innate defense by mounting an attack against one or more particular foreign substances

also called nonspecific defense system, responds immediately to protect the body from all foreign substances, whatever they are. It includes our skin and mucous membrane

a functional system rather than an organ system in an anatomical sense.

refers to the mechanical barriers that cover body surface and to the cells and chemicals that act on the initial battlefront to protect the body from invading pathogens

skin secretions make epidermal surface acidic which inhibits bacterial growth sebum also contains bacterial killing chemicals

provides resistance against acids alkalis and bacterial enzymes

traps microorganism and respiratory and digestive tracts

filter and trap microorganisms and other airborne particles in nasal passages

propels and debris laden mucus away from lower respiratory passages

contains concentrated hydrochloric acid and protein digesting enzymes that destroy pathogens in stomach

inhibits growth of bacteria and fungi in female reproductive tract

continuously lubricate and cleanse eyes(tears) and oral cavity(saliva) contain lysozyme and enzyme that destroys microorganism

room the body in blood and lymph they are a unique group of aggressive lymphocytes that can burst and kill cancer cells viruses infected body cells and some other non-specific targets

promote cell lysis by direct cell attack against virus infected or cancers body cells do not depend on specific antigen recognition

prevent spread of injurious agents to adjacent tissues disposes of pathogens and the tissue cells and promotes tissue repair releases chemicals mediators that attract phagocytes to the area

when the natural killer cells attack the target cells membrane and release liquid chemicals called

what are the four most common indicators or cardinal signs of acute inflammation

group of plasma proteins that lies microorganisms enhances phagocytosis by opsonization and intensifies inflammatory response

enhance the innate defense either by attacking microorganisms directly or by hindering their ability to reproduce

the most important antimicrobial proteins

landmarks experiments revealed three important aspects of adaptive defense. What are these?

it recognize and mount even stronger faster attacks in previously encountered pathogens

immunity is not restricted to the initial infection site

it recognize an act against particular pathogens or foreign substance