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36 Cards in this Set

  • Front
  • Back

Functions of the lymphatic system

facilitating immune responses,


Draining excess interstitial fluid and plasma proteins,


and transporting dietary lipids and vitamins from GI tract to the blood

Facilitating immune responses

recognize microbes or abnormal cells and responding by killing them directly or secreting antibodies that cause their destruction

So lymphatic system consists of

Redbone marrow (stem cells)


lymphatic vessels


lymphatic organs


lymphatic tissues

Lymphatic organs

Thymus, spleen, lymph nodes

Lymphatic tissues

Lymphatic nodules, malt, tonsils

Redbone marrow

The site of lymphocyte production

Lymphatic vessels and lymph

Lymph capillaries, vessels, trunks, ducts.

Lymphatic organs

Specialized reticular tissue containing large numbers of lymphocytes, example; thymus gland, spleen, lymph nodes

Diffuse lymphatic tissues

No capsule, along the mucous membrane lining tracks, lymphatic nodules and norio's aggregates

Lymphatic organs

Redbone marrow


Thymus


Spleen


Lymph nodes

Diffuse tissue

Tonsils and peyers patches

Lymphatic vessels

Right lymphatic duct


Thoracic duct

Lymph

Similar to interstitial fluid

Emphatic capillaries

Begin as close ended vessels with a slightly larger diameter than blood capillaries


composed of overlapping endothelial cells which work as one way valves for flow to enter the lymphatic capillary but not out

Primary lymphatic organs/tissues

Provide environment for stem cells to divide and mature into b&t lymphocytes

Secondary lymphatic organs/tissues

Site where most immune responses occur

Example of primary lymphatic organs/tissues

Redbone marrow


Thymus

Redbone marrow

Gives rise to mature b cells

Thymus

The site where pretty sells from red marrow mature

Secondary lymphatic organ sash tissues examples

Spleen, lymph nodes and lymphatic nodules

Lymph nodes

Cleanse the length of foreign substances, microface destroys some and lymphocytes destroy others by immune response

Lymph nodes part 2

A site of t&b cell activation and profileration

Spleen

Largest mass of lymphatic tissue in the body

Spleen part 2

Storage blood platelets involved in a production of blood cells during second trimester of pregnancy microphages remove worn-out defective cells b&t cells carry out immune functions

Malt

Tonsils, appendix, peyers patches

Tonsils

Form ring at top of throat - Palatine, pharyngeal and lingual tonsils

Peyers patches

In the ileum of small intestine

Interiorfirons

Virus infected cells produce IFN to save neighboring healthy cells

Adaptive immunity

Ability of the body to defend itself against specific invading agents

Distinguished from innate immunity by

Specificity recognize self and non-self


Memory second encounter produces even more bigger is response

Immunocompetence

Ability to carry out adaptive immune response

Cell mediated immunity

Intercellular pathogens example fungi viruses parasites cancer and tissue transplants

Antibody mediated immunity

Against extracellular agents in the body fluid example bacteria

Examples of APCs

Microphages b cells and dendritic cells

T cell clonal section

After successful stimulation the activity t-cell profilerates and gives rise to a clone some clones become effective and some become memory cells

Antibodies

Immunoglobulin, for polypeptide chains to heavy too light to antigen find sites at the tips