Lymphatic System

Lymphatic System

Defense of the body, but it also plays a role in maintaining the fluid balance

Immunity Involves

-Organ

-Tissue

-Cell

-Chemical

Fluid Balance

Lymphatic capillaries collect excess fluid

Lymph

Lymphatic capillaries that collect excess fluid

Substance derived from cells

-Hormones

-Enzymes

-Waste products

Substance in plasma

-Ions

-Nutrients

-Gases

-Proteins

Lipid absorption

Absorbs lipids and other substances from the digestive tract through lacteals

Lacteals

Lymphatic vessels located in the lining of the digestive tract

Chyle

Lymph passing through these vessels

Defense

microorganisms and other foreign substances are filtered from lymph by lymph nodes and from blood by spleen

Lymphatic System includes

-Lymph

-Lymphatic vessels

-Organs

-Tissue

Lymphatic Vessels

similar to veins, lymphatic vessels transport lymph from body tissues to the chest, where it enters the cardiovascular system

Right Lymphatic Duct

Large collecting vessel that receives lymph from superior right quadrant of the body

Thoracic Duct

Conducts lymph received from the rest of the body

Lymph Nodes

Small round organs located at irregular intervals in the network lymph nodes

Lymphocytes

Contain lymphatic tissue mainly composed

Cervical and head

70 head and neck

Axillary

30 upper limbs, superficial thorax

Thoracic

100 thoracic wall and organ

Abdominopelvic

230 abdomen and pelvis

Inguinal and Popliteal

20 lower limbs and superficial pelvis

Tonsils

Surrounded the opening of the mouth, nose throat into the lower digestive and respiratory tract

Palatine tonsils

Lateral side of the opening of the mouth into the throat

Pharyngeal Tonsils

Top of throat near the posterior of nasal cavity

Lingual Tonsils

Posterior of the tongues base

Spleen

-Located in the upper left abdominal cavity

-roughly size of clenched fist

Average weight of Spleen

180g in males and 140g in females

White Pulp

1/4 of the volume is speed surrounded arteries with the spleen

Red Pulp

3/4 of the volume of the spleen, associated with the veins within the spleen

Function of Spleen

Destroying defective red blood cells, detecting and responding to foreign substance in the blood and acting as blood reservoir

Thymus

Located in anterior mediastinum

Main site for maturation of T-cells

Castleman Disease

Group of rare lymphoproliferative disorders that involve enlarged lymph nodes, broad range of inflammatory and laboratory abnormalities

Tonsilitis

Infection or inflammatory it may lead to sore throat, fever and severe difficulty swallowing

Tonsil

Normally protects the entrance of gastrointestinal tract and respiratory tract

Splenomegaly

enlargement of the spleen often associated with the destruction of blood cells; results in anemia, leukopenia, or thrombocytopenia

Filariasis

-Caused by infection of lymphatic channels by a worm or parasite

- Swelling extremities

- Hydroceles

- Testicular Masses

-Second Largest cause of permanent leprosy worldwide

Hodgkin's lymphoma

Type of cancer that affect the lymphatic system which is part of the body germ fighting immune system. Lymphocytes grow out of control

Lymphadenopathy

Generalized lymphadenopathy include infections, autoimmune diseases, malignancies, histiocytoses, storage disease, benign hyperplasia and drug reactions.

Infectious monononucleosis

Result in widespread adenotraphy