Lymphatic

watery fluid that forms when excess tissue fluid is absorbed into lymph capillaries

lymph

lymph is returned to the cardiovascular system via

lymphatic vessels

lymph returns these two things to the blood

excess interstitial fluid and leaked proteins

this fluid leaks from blood capillaries and surrounds body cells; can become lymph

interstitial fluid

the lymphatic system aids in digestion and absorption of this

fat/lipid

lymph is composed mainly of these 3 things

water, proteins, lipids

the lymphatic system helps maintain this in the body

fluid balance

specialized lymphatic capillaries involved in fat absorption

lacteals

abnormal accumulation of interstitial fluid

edema

lymph filters pathogens and

waste

lymph returns excess _________ _____ and leaked ____ to the bloodstream

interstitial fluid, proteins

lymphatic vessel characteristics of walls, ends, and feature

thin walled, blind ended, valves (endo flaps)

4 mechanisms that move lymph through vessels

skelly and smooth muscle contraction, respiratory pressure change, valves

order of lymph flow

cvntd

lymphatic structures present in greatest number throughout the body

lymph capillaries

primary function of lymph capillaries

filter pathogens, return IF to blood

what does the right lymphatic duct drain?

lymph from right arm, head, neck

lymph from the rest of the body is drained by the

thoracic duct

the spleen filters

blood!!

where do t-cells mature?

thymus

where do b cells mature?

red bone marrow

the 3 guys in MALT (mucosa associated lymphatic tissue)

tonsils, peyers patches, appendix

this contains lymphocytes, macrophages, dendritic cells, etc, found in lymphatic organs

lymphoid tissue

part of MALT, protects pharynx against nose and mouth pathogens

tonsils

these 2 MALT guys destroy pathogens in intestine

peyers and appendix

clusters of lymphatic tissue in small intestine

peyers patches

hangs off beginning of left intestine, contributes to immune defense, cecum

appendix

3 lymphatic system functions

fluid balance, lipid absorption, defense

lymphatic capillaries joint together to form larger

lymphatic vessels

lymphatic vessels join together to form larger vessels called

lymphatic trunks

these return lymph to the bloodstream at the junction of the internal jugular and subclavian veins

lymphatic ducts

both lymph organs and tissues contain fine collagen reticular fibers, which act as a

filter

the thoracic duct drains lymph into the

left subclavian vein

Lymph exits a lymph node via the

efferent lymphatic vessels

lymph is filtered by the

lymph nodes

Which lymphoid tissue destroys intestinal pathogens to help prevent them from entering lymph, blood, or tissue spaces?

peyers patches

Which material groups may be carried in the fluid formed from absorbed tissue fluid?

Water, proteins, lipids, and other materials

At what venous junction do lymphatic ducts return lymph to the bloodstream?

Junction of the internal jugular and subclavian veins

Which superficial lymph node regions are abundant in the body?

Axillary, cervical, and inguinal regions

Where is the spleen located?

Left upper quadrant of the abdomen, behind the stomach

Compare lymphoid organs and lymphoid tissues by whether they have a connective tissue capsule?

Lymphoid organs are encapsulated except thymus; lymphoid tissues are nonencapsulated

Why is the appendix prone to trapping pathogens and becoming infected?

Its worm-like structure

Sequence lymph movement from tissue fluid entry to return to blood using the main vessel terms?

Lymphatic capillaries → lymphatic vessels → lymphatic trunks → lymphatic ducts → internal jugular/subclavian vein junction

Where do lymphocytes originate?

stem cells in red bone marrow

This drains lymph from the upper right quadrant of the body into venous blood using a subclavian vein.

right lymphatic duct

The lymph from the upper left side of the body and all regions of the lower body drains into the

thoracic duct (when you see Left and Lower)