Juaid lymphatic system The lymphatic system is part of the circulatory system Lymphatic system consists of lymph Lymphatic vessels Structures and organs containing lymphatic tissue ID: 935392
Download Presentation The PPT/PDF document "Lymphatic system Nada AL-" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Lymphatic system
Nada AL-Juaid
Slide2lymphatic system
The lymphatic system is part of the circulatory system,
Slide3Lymphatic system consists of:
lymphLymphatic vesselsStructures and organs containing lymphatic tissueRed bone marrow
Slide4Functions of Lymphatic system
Drain interstitial fluidThe lymphatic system also removes excess fluid, and waste products from the interstitial spaces between the cells.Transport dietary fatsabsorb lipids from the intestine and transport them to the blood
Carry out immune responsesdefend the body against disease by producing lymphocytes
Slide5Lymphatic organs and tissues
Primary Lymphatic organs:Thymus glandBone marrow
Secondary Lymphatic organs:Lymph nodesSpleen
Tonsils
Peyer’s
patches
appendix
Slide6Primary Lymphatic organs
Thymus glandThe thymus secretes a hormone, thymosin, that causes pre-T-cells to mature (in the thymus) into T-cells.
Slide7Primary Lymphatic organs
Bone marrow: Is the soft tissue found in the hollow Interior bones.marrow in large bones produces new blood cells.
Slide8Bone marrow
There are several different types of white blood cells. white blood cells are often characterized as granulocytes or agranulocytes
Slide9Bone marrow
Granulocytes (polymorphonuclear leukocytes): leukocytes characterised
by the presence of differently staining granules in their cytoplasm when viewed under light microscopy. There are three types of granulocytes: neutrophils, basophils, and
eosinophils
, which are named according to their staining properties.
Agranulocytes
(mononuclear leukocytes): leukocytes characterized by the apparent absence of
granules
in their
cytoplasm
.
These include
lymphocytes
,
monocytes
, and
macrophages
.
Slide10Secondary Lymphatic organs
Lymph nodesThere are between 600-700 lymph nodes present in the average human body.
It is the role of these nodes to filter the lymph before it can be returned to the circulatory system. Although these nodes can increase or decrease in size throughout life, any nodes that has been damaged or destroyed, does not regenerate
.
Slide11Secondary Lymphatic organs
Lymph nodesLocated along lymphatic vesselsCovered by capsule
Trabeculae divide node into compartmentsContain B cells, T cells,dendritic cells, and macrophages
Slide12Secondary Lymphatic organs
SpleenConnective tissue capsule with internal trabeculae
The spleen behaves similar to a lymph node but instead of filtering the lymphatic fluid it filters the blood.
Red Pulp
: Clusters of Macrophages and Red Blood Cells.
White Pulp
: Lymphocytes and Macrophages,
Slide13Secondary Lymphatic organs
Tonsilsare area of lymphoid tissue on either side of the throat.Tonsils refers to the Palatine tonsils
,that can be seen on the left and right sides at the back of the throat.
Slide14Secondary Lymphatic organs
Tonsils : helping fight off pharyngeal and upper respiratory tract infections.Other types are pharyngeal tonsils
and lingul tosils
Slide15Secondary Lymphatic organs
Peyer’s patchesPeyer's
patches are lymphoid follicles located in the wall of the small intestine.
Slide16Secondary Lymphatic organs
appendix
Slide17Slide18References
http://www.lymphnotes.com/article.php/id/151/http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookimmun.htmlhttp://pms.meridianschools.org/Ch%2016%20Section%202%20Notes.pdf