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

Lymphatics and the Breast

How Lymph is formed

Edema

swelling at any part of the body due to collection of fluid in the intercellular spaces of tissues

Lymphatic circulation in the breast

Lymph node ( LN )

Tonsils

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

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

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

THANK YOU !!

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.

21-25. Draw the tonsils and label.

Answers1. True 11. True2. True 12. False3. False 13. edema 4. True 14. edema5. True 15. neck6. False 16. groin7. True 17. armpit8. False 18. tonsils9. True 19. chyle10. True 20. lacteals