module 8 lymphatic system
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Lymphatic system
Amy Elizabeth V. Tenedero-Manalaysay, M.D.Internal Medicine / Herbal Consultant
Classique Herbs International
MODULE 8
Lymphatic System
1. Lymph2. Lymphocytes3. Lymphatic vessels4. Lymph nodes5. Tonsils6. Spleen7. Thymus gland
Functions of the Lymphatic System
1. Fluid balance – 30 L fluid pass from blood capillaries into interstitial spaces/day
- only 27 L pass from interstitial spaces back into blood capillaries
- 3 L enters lymphatic capillaries – called lymph
2. Fat absorption – lacteals are special lymphatic vessels found in small intestines
- chyle – milky appearance of the lymph passing through the lacteals
3. Defense
Lymphatic System very important for maintaining the proper distribution of
fluids in the body
also an important/ vital component of biological immune defense
also responsible for spread of cancer cells
also called the “Secondary Circulatory System” because it reabsorbs and returns escaped fluids throughout the body
it runs parallel to the venous system and empties into it
Edema
swelling at any part of the body due to collection of fluid in the intercellular spaces of tissues
Tonsils
forms protective ring of lymphatic tissue around the openings between the nasal and oral cavities and the pharynx
provide protection against pathogens and other potentially harmful material entering from the nose and mouth
Spleen
size of a clenched fist left, superior corner of abdominal
cavity it filters blood instead of lymph it functions also as a blood reservoir,
holding a small volume of blood
Thymus
bilobed gland, roughly triangular in shape
located in superior mediastinum site for the production and
maturation of lymphocytes
Immunity
ability to resist damage from foreign substances (such as
microorganisms) and harmful chemicals (such as toxins released by microorganisms)
categorized as: a. innate (non-specific) immunity b. adaptive (specific) immunity c. acquired immunity
Innate immunity
Body recognizes and destroys certain foreign substances, but the response is the same each time the body is exposed to them
Adaptive immunity
body recognizes and destroys foreign substances, but the response
improves each time the foreign substance is encountered.
exhibit Specificity and Memory Antigens – substances that stimulate
adaptive immune response. a. foreign antigens b. self-antigens
Acquired immunity
1. Active natural – develops symptoms of the disease
2. Active artificial – e.g. Vaccination3. Passive natural – transfer of
antibodies from mother to child across the placenta before birth
4. Passive artificial – e.g. Antiserum
QuizTRUE OR FALSE1. Lymphatic system transports WBC.2. Lymphatic system collects excess
fluid from the body tissue.3. Lymphatic system transports RBC.4. Lymphatic system transports fluid
into the bloodstream.5. Both men and women can develop
breast CA.6. Once CA spreads to the LN,
treatment becomes more difficult.
7. Breasts CA forces lymph to leak out of the lymph vessels and between the cells.
8. A mammogram can detect tumors that cannot be felt during a breast self-examination.
9. The lymphatic system is also called a Primary Circulatory System.
10. LN work like a biological filtering system.
11. Lymphatic system is important in regulating the distribution of fluids in the body.
12. Breasts examination prevent breast CA.
Identify13.___________ excess fluid in the tissues.14. ___________ another name for swelling.15. ___________}16. ___________} parts of the body that
contain high17. ___________} concentrations of LNs18. ___________}19. ___________ milky appearance of lymph20. ___________ special lymphatic vessels
found in the linings of small intestine.