Lymphatic System - Exam 4

Question 1

lymph

Answer 1

interstitial fluid once it has entered lymphatic vessels

Question 2

lymph is formed when

Answer 2

the interstitial fluid is collected up through lymph capillaries

Question 3

lymph capillaries

Answer 3

permeable, loosely joined endothelial mini valves that act as a one-way gate, withstand interstitial pressure and remain open, anchored to connective tissue

Question 4

lymph node

Answer 4

main lymphoid organ of the body, embedded in connective tissue & clustered along lymphatic vessels, aggregations of these nodes occur near the body surface in inguinal, axillary, and cervical regions of the body

Question 5

functions of a lymph node

Answer 5

filtration (via macrophages) & immune system activation (via lymphocytes)

Question 6

components of the lymphatic system

Answer 6

nodes, lymph, vessels, & organs

Question 7

organs associated with the lymphatic system

Answer 7

spleen, tonsils, thymus, Peyer’s patches, appendix

Question 8

3 main functions of the lymphatic system

Answer 8

collect and return interstitial fluid including plasma protein to the blood to maintain fluid balance, defend the body against disease, absorb lipids through the intestine and transport them into the blood

Question 9

lymphatic capillaries present in intestinal mucosa are called

Answer 9

lacteals

Question 10

mechanisms that helps lymph flow

Answer 10

valves & pressure because no pump present, contracts skeletal/thoracic/smooth muscles, pulsations of nearby arteries
increase interstitial fluid pressure = open
increase internal lymph vessel pressure = closed