Chapter 12 lymphology Yasmin L

What are the general functions of the lymphatic system?

keeps body fluid levels in balance and defends the body against infections

How does lymphatic fluid flow from capillaries to the heart?

it goes through the left and right lymphatic ducts to the left and right subclavian veins

What is the right lymphatic duct?

it drains upper right quadrant of body

What is the left lymphatic duct?

it drains the remaining ¾ of the body

What are lacteals?

absorbers of lipid-soluble nutrients (fat)

located in the villi of small intestine

What are lymph nodes?

bean shaped organs containing macrophages (big eaters) and lymphocytes(white pulp tissue)

Where is the large collection of the lymph nodes?

> cervical

> axillary

> vertebral

> mesentery(intestines)

What is the spleen?

upper left quadrant of the abdomen

What is the white pulp tissue?

Lymphocytes+macrophages

What is red pulp tissue?

large venous sinuses(thin walled veins)

What are the additional functions of the spleen?

stores blood, destruction of worn out red blood cells(macrophages), production of erythrocytes in fetus

What is the thymus?

located in the middle of the chest/sternum, atrophies(shrinks) after puberty

What are tonsillar tissue?

1. pharyngeal tonsil (adenoid)

2. palatine tonsils(hard palate)

3. lingual tonsil(tongue)

4. lymphatic nodules of intestine (feyer’s patches)

What is lymphedema?

lymphatic illness

What are autoimmune diseases of the thymus?

1. lupus erythematosus

2. rheumatoid arthritis

3. rheumatic heart disease

4. myasthenia gravis

5. multiple sclerosis

6. ulcerative colitis

7. juvenile onset diabetes

What is lupus erythematosus?

skin disorder

What is rheumatoid arthritis?

joint disease

What is rheumatic heart disease?

valve disease

What is myasthenia gravis?

skeletal muscle

What is multiple sclerosis?

nervous system

What is ulcerative colitis?

digestive system disorder

What is juvenile onset diabetes?

endocrine system