TheLymphatic System

By Kristin James, Alex Christiansen, & Saundra Thomson

FUN FACTS!!! The lymphatic system

returns about 3.17 quarts (3 liters) of fluid each day from the tissues to the circulatory system.

Production of lymphocytes (immune system) takes place in the bone marrow.

The B-cells are known to fight off pathogenic bacteria. However, a special type of B-cells known as memory B-cells protect the body from attack by similar pathogens in the future.

Purposes of the Lymphatic System

The lymphatic system aids the immune system in removing unwanted waste from the body

The Lymphatic System is known as the drainage system because it removes excess fluids that cause harm to the body

It also absorbs fats and fat-soluble vitamins from the digestive system

The Process: Blood carries oxygen, nutrients and hormones for

our cells Blood Plasma flows with the blood, then separates

to reach the cells through body tissue and deliver its nutrients

90% of the plasma goes to the cells this fluid is now known as interstitial fluid the other 10% is Lymph

Lymph:

Lymph, (a.k.a “blood plasma”) a milky-white to yellow, watery liquid, is the main component of the lymphatic system.

The liquid originates from blood, it contains oxygen, proteins, glucose and white blood cells.

It delivers nutrients to the cells, and removes undigested protein from the cells.

Lymphatic Capillaries: Lypmh has to enter the

lymphatic system using these specialized capillaries

They begin as “blind-ended” tubes that are about as thick as a single cell

Each cell is fastened to nearby tissues by an anchoring filament, where they turn into lymphatic vessels

Lymphatic Vessels Lymphatic vessels

are larger versions of lymphatic capillaries

They’re located deeper in the body near major blood veins

The vessels are also known as lymphangions

Lymph Nodes There are between 600-

700 lymph nodes present in the average human body

Their job is to filter lymph

The nodes is the last stop of cancer cells, where they are trapped and destroyed- until overwhelmed

Although these nodes can increase or decrease in size throughout life, any nodes that has been damaged or destroyed, does not regenerate.

LAB!! Turn to a partner

and play hot hands

What do you think is happening beneath the skin when your hands start reddening?

Lymphocytes Lymphocytes is a type

of white blood cell, and they form lymph tissue.

Lymphoid tissue defends the body against the infections and spread of tumors.

B-lymphocytes (B-cells) and T-lymphocytes (T-cells).

The T-cells are known to fight off the infection of viruses.

B-cells take care of pathogenic bacteria.

Major Body Parts:Thymus: Located towards the basal of the

heart, made up of lymphatic tissue, and takes part in the development of the immune system

Tonsils: This organ of the lymphatic system is located in the back of the throat.

Adenoids: The adenoids can be described as a mass of lymphoid tissue that is situated by the tonsils.

Diseases and Infections Elephantiasis Mesenteric lymphadenitis Castle-man Disease Tonsillitis Lymphodenpathy Lymphoma

Vocabulary to remember:

Lymphatic System: the system by which lymph is returned from the cells to the blood

Lymphatics: A lymphatic Vessel Thoracic duct: the main trunk of the

lymphatic system, passing along the spinal column

Vocabulary:

Lymphocytes: a type of white blood cell with a sphereical structure

Lymphadenopathy: swollen lymph nodes Lymphadema: Cancer of the lymph

nodes Elephantiasis: a chronic filarial disease

resulting in lymphatic obstruction, characterized by marked enlargement of the parts affected, especially of the legs

Bibliography http://www.lymphnotes.com/article.php/id/151/ http://health.howstuffworks.com/human-body/systems/lymphatic/question138.htm http://www.medical-reference.net/2011/08/how-does-lymphatic-system-work.html http://www.nlm.nih.gov/medlineplus/

lymphaticdiseases.html http://www.betterhealth.vic.gov.au/bhcv2/

bhcarticles.nsf/pages/Lymphatic_system http://kidshealth.org/parent/general/body_basics/

spleen_lymphatic.html# http://www.funtrivia.com/en/SciTech/Lymphatic-

System-18883.html http://www.buzzle.com/articles/lymphatic-system-

facts.html