Ch 22 Lymphatic Fluid Balance pt 2

What is involved in lymphatic transportation?

respiratory pump, muscular pump, lymphatic smooth muscle contraction, valves

What is the function of the lymph vessels?

transport lymph to the venous portion of CV system

What does the respiratory pump do?

thoracic pressure changes as we breathe

What does the muscular pump do?

milk the skeletal muscles

What do valves do?

prevent backflow

What is lymph fluid?

clear, colorless fluid that circulates through the lymphatic system

Lymph fluid contains?

plasma proteins, lipids. waste products, excess fluid, WBCs

Describe plasma proteins

immunoglobulins (antibodies) and other proteins involved in blood clotting and immunity

Describe lipids

absorbed from the digestive system

Describe waste products

dead cells, bacteria and other debris

Describe excess fluid

excess fluid from tissues and interstitial space

Descirbe WBCs

immunity

Lymph fluid composition varies depending on?

the part of the body it is coming from and presence of any infections

Lymph nodes play an important role in…

filtering harmful substances and cleaning lymph fluid

Lymphatic system manages fluid balance by?

draining interstitial fluid, transporting plasma proteins

Describe how the lymphatic system drains interstitial fluid

lymphatic system collects excess IF from spaces between cells in tissues and returns in to the blood stream, maintain/regulate BP by reducing the hydrostatic force for fluid dispersion and prevent swelling/edema by maintaining normal BV

Describe how lymphatic system transports plasma proteins

lymph fluid contains plasma proteins to prevent build up of these proteins in tissues, prevents fluid from leaking back into the interstitial space

Flow of lymph is altered based on?

pressure nad resistance

The flow of lymph is equal to?

change in pressure over resistance

Fluid dynamics with lymph fluid is based on the balance between 2 factors, what are they?

hydrostatic pressure and osmotic pressure

Describe hydrostatic pressure

force generated by pressure of fluid in capillary walls by the blood plasma or IF, pressure exerted by liquids is the push of forces

Describe osmotic proessure

forces exerted by the protein in fluid which is pull of forces, like pulling water in

Osmotic presure of fluid into _______ to do what?

venules, to balance fluid and proteins

Hydrostatic pressure of fluid is pressed into?

interstitial space, greater in arterioles than venuls

Balance of hydrostatic pressure and osmotic pressure creates?

filtrated CV fluid

10% of lymph volume is excreted into the _____ _____ is absorbed by ________, the remainder is absorbed into?

lymphatic system, remainder is absorbed into venous system and fluid absorbed into lymph vessels as interstitial fluid increases

Describe lymphatic flow steps

filtration, collection, filtration and cleaning, return to bloodstream

Describe filtration

Lymphatic system filters xs fluid & waste products from the tissues and collects them in small vessels = Lymphatic capillaries.

Describe collection

Lymphatic capillaries converge to form larger vessels called Lymphatic vessels, which transport the collected fluid = Lymph, to the lymph nodes.

Describe filtration and cleaning

Lymph nodes filter / clean the lymph fluid, removing any harmful substances (Bacteria and Viruses, Dead cells & other debris).

Return to bloodstream

Cleansed Lymph fluid is then returned to the bloodstream through Thoracic duct & other large lymphatic vessels.  This helps to maintain fluid balance in the body by returning xs fluid to the bloodstream, where it can be eliminated from the body.

Describe lymphatic flow in full

1.  Filtration:  Lymphatic system filters xs fluid & waste products from the tissues and collects them in small vessels = Lymphatic capillaries.

2.  Collection:  Lymphatic capillaries converge to form larger vessels called Lymphatic vessels, which transport the collected fluid = Lymph, to the lymph nodes.

3.  Filtration and cleaning:   Lymph nodes filter / clean the lymph fluid, removing any harmful substances (Bacteria and Viruses, Dead cells & other debris).

4.  Return to bloodstream:   Cleansed Lymph fluid is then returned to the bloodstream through Thoracic duct & other large lymphatic vessels.  This helps to maintain fluid balance in the body by returning xs fluid to the bloodstream, where it can be eliminated from the body.

4 lymphatic flow issues?

swelling, nerve and blood vessel compression, respiratory, cardiac

Describe swelling as a lymphatic flow issue

xs fluid can cause pain and interfere with normal movement and function

What is lymphedema?

xs swelling caused by blockage of the lymphatic system

If lymphedema is untreated what happens?

infection, necrosis and other complications

Describe nerve and blood vessel compression in lymphatic flow issues

increased pressure that causes numbness, and tingling

Describe respiratory lymphatic flow issues

severe edema can cause fluid accumulation in the lungs to cause SOB, wheezing and increased fatigue

Describe cardiac lymphatic flow issues

edema can put strain on the heart leading to heart failure and arrhythmias